"Cat-Astrophe" gives us this gem: At a retirement home, Cosmo and Wanda are trapped in a butterfly net by an Alter Kocker who shows them pictures of his grandchildren. At one point, he holds up a souvenir shirt reading "I cut a rug - and a little something else - at Ruben and Saul's Bris!"
According to a billboard, the mascot of Adrenaland is a pill known as Phen-Phen Phil. Phen-Phen is the commercial name for fenfluramine/phentermine, which was used as anti-obesity medication until it was shown to cause potentially fatal pulmonary hypertension and heart valve problems. While it is more of a Parental Bonus joke, how often do you hear or see a drug reference on a Nickelodeon cartoon that was made after 1999 (or, at all)?
One example from "Shelf Life":
Timmy: He can turn planets into plants. He can turn gravity into gravy. Wanda: He can turn Uranus into... Oh my gosh! We've got to stop him! Cosmo: What?! I don't get it—what's the threat?!
And the Adam West / Catman as a kid episode, where he repeatedly latches onto people legs in an... "affectionate" hug. Leading to this line:
Timmy: "So he can stay the night?"
Timmy's Dad: "Sure! He's part pet! But he gets affectionate with my leg, he's off to the shelter!"
And, in a later part of the episode (where Catman is returned to normal), we get this.
Timmy's Dad: Sure, we love Adam West. He's part legal guardian and part pet!
Timmy's Mom: And he's so affectionate!
And Timmy's dad gets pissed when Adam does this to Timmy's mom.
It gets weirder when the two glance at each other, almost embarrassed.
In Power Mad, Timmy reaches a level in a virtual reality game that he describes "looks like an underwater version of my Aunt Gertrude's house." A crab version of said character suddenly comes in, saying she "wants to pinch those chubby cheeks" of Timmy's. He then replies, saying "I hope she means my face."
Wanda later gives that line a Call Back, when Timmy wishes for "cheeks of steel."
In "Escape from Unwish Island", Timmy (after noticing his parents are gone) decides to do everything he ever wanted (roller coaster in the house, etc.)
Timmy: Finally, every ten-year-old's dream! A room full of supermodels!
Timmy, however, promptly asks the swimsuit clad models if they can bake cookies, but we hear Cosmo later mention something about bouncing on the bed with the supermodels.
When Timmy goes to his cupboard to find gadgets he once wished for, his shrink suit explodes, so Cosmo admits that he secretly played with it when no one else was around, leading Wanda to say, "Did you play with anything else?" Depending on your interpretation, her reaction could be along the lines of this.
We get a reference to anti-racism in "Father Time".
Cosmo:[referring to the dash that Timmy's dad will take part in] This is a good race!
70s!Wanda: We think ALL races are good, man.
70s!Cosmo: We don't judge.
In "Operation FUN" Crocker gets hit with an exploding rocket with an "F" on it...or an F bomb.
"Meet the OddParents!" is an episode designed to get past the radar.
In "Farm Pit" Cosmo says he stole slippers from a "sleeping munchkin" then when we cut to Cosmo stealing slippers of a guy in an area surrounded by crime scene tape, and he says "at least I think he was sleeping", meaning that Cosmo looted from a dead guy.
In "DinkleScouts", Timmy's Dad comments that if he takes a group of boys to the theater in his troop leader uniform he'll get arrested, implying he means he'd get mistaken for a pedophile.
In "Genie Meanie Minie Mo!", the substance smoof is obviously a parody of hemp.
Let's not forget the "magic weenie" joke from "I Dream of Cosmo".
In "Cosmo Con":
Cosmo's wide smile when Britney Britney rubs him all over her face after she mistakes him for a towel.
Mr. Turner wants to celebrate "proving his masculinity" in getting his wife "back" from Crocker, so he tells Britney Britney to "hit it", obviously meaning to sing. Mrs. Turner then complains that he never tells her to "hit it", and angrily tosses Britney out of the house.
Does no one remember the picture of crossdressing Crocker from "Information Stupor Highway" that gets sent worldwide via email? Timmy's dad sees it on Timmy's computer screen and hints at him watching porn.
Cosmo: Uh, you know, they're easier ways to get on TV. Have you considered a low-speed chase?
While Timmy is going through all the channels, he ends up in a Fat Albert parody. Timmy then finds them playing instruments made out of random objects they found in the dump, like in the original show. When Timmy joins the band he is handed a dirty pooper scooper, to which Cosmo and Wanda reply to with this:
Wanda: I hope Timmy washes his hands. Cosmo: And those filthy kids!
The title of one of the later episodes: "Crock Blocked". Jesus Christ, Nickelodeon...
In this very episode, there's a scene where Timmy finds Crocker hidden in his bed in a cockroach costume. Mr. Turner arrives to hit the "crocker-roach" in the eggsac. This joke repeats itself when he thinks Crocker is a chicken ghost.
That's nothing compared to these episode titles: "Who's Your Daddy?" (Timmy wishes he had A.J.'s, Chester's, and Sanjay's fathers) and "Home Wrecker" (Timmy wrecks Vicky's house so she'll get blamed for it).
Throughout the episode "Fairly Odd Baby", Poof's unidentified sex becomes a running gag, and Timmy, Cosmo, and Wanda keep wanting to "check" (which they do by almost peeking under his diaper). In the end, they never find out by means of what Poof's got down there, but by the fact that he suddenly has a water squirter, in which Timmy concludes it's a boy because "only boys play with water squirters" (which unfortunately got some females annoyed because it implied girls can't play with water squirters).
Mr. Birkenbake, the New-Age Retro Hippie teacher at Dimmsdale Elementary School, has a name that's a subtle portmanteau of "Birkenstock" (a type of sandal stereotypically worn by hippies and butch lesbians, but mostly hippies) and "bake" (slang for smoking marijuana).
Quite a few fly by based on a gag in "Anchors Away" where Cosmo is wearing a skirt:
Most of the subsequent slips are related to his "cha-chas" being referenced: "I landed on my cha-chas!" "Ouch, not the cha-chas!"
In "The Past and the Furious," Sparky and Timmy are repairing damage to the timeline. After they repair the first part, Timmy says that it's "fixed." Sparky replies with...
Sparky:(while covering groin) Don't EVER say "fixed" to a dog, Timmy!
There are actually a lot of neutering jokes, most of them about Vicky's dog.
In "Mission: Responsible" Timmy says he doesn't want Mama Cosma to babysit because she pinches his cheeks way too hard. Cosmos adds "We are a hard cheek-pinching family. Front and back!"
In The Fairy Beginning, Mr Turner mistakes Timmy for a beaver. Later he said that he didn't know that he had a beaver girlfriend, but then again, he isn't sure if it's even legal. In the same episode (specifically, in the flashback), Juandissimo asked Wanda to go to the janitor's closet with her. Yeah... it was for a different reason, though, but still.
At the end of "Love Struck", Tootie starts outright moaning in delight as she showers Timmy with heavier and heavier love.
In "The Big Fairy Share Scare" Timmy's dad doesn't recognize his wife after she gets a makeover. He tells her "Be gone you evil temptest. You are giving me the tingles."
In the episode "Whittle Me This!", Timmy is excited about a new video game called Hillbilly Road Rage. He starts listing the reasons he thinks that hillbillies are cool, mentioning how they can park their cars on their lawn and not brush their teeth, and that they can take their cousins to the school dance.
In "This Is Your Wish", Timmy and Wanda are seated between the kitchen and bathroom doors at The Pointy Crown restaurant in Fairy World. At one point, a waiter comes up to Timmy and asks...
Waiter: Would you like some chocolate pudding?
Timmy: That depends. Which door did you come out of?
A moment later, Billy Crystalball tells them that it's not really pudding they're eating. Turns out Timmy did accept the waiter's offer, resulting in a Spit Take.
In a clip that is shown on the fairy TV show, Cosmo's misunderstanding of Timmy's wish leads into him getting breast implants, making Timmy giggle. He reacts with "I'm keeping them."
In "Hard Copy", Timmy gets a magic photocopier that makes anything he copies real. After he finishes copying the toy magazine, he says "And now to copy dad's magazines."
Later, Timmy holds up one of his dad's magazines titled, "Under the Bed Monthly".
Almost a literal getting Crap Past the Radar. In 'No Substitute for Crazy', the fake substitute teacher, Mrs. Doombringer, passes out golden stars for random acts, like punching people or misspelling a word. Timmy gets one when he comes out of the restroom. In the next scene we see Timmy covered in stars but with a box of fiber and a glass of water on his desk. Draw the necessary conclusions as to how he gets those stars.
In a newer episode (about the replacement fairy), Timmy has a toy squid in his tub which looks like a dick. What's worse? It shot white stuff. I don't know the context 100% (me and my friends were too laughing), but how much text can you put to getting crap past the radar?
The white stuff was toothpaste.
According to "Vicky Loses Her Icky", it's apparently tradition in the Turner household to shove a Bug Catching net up Dad's pants every Father's Day.
In one episode, Wanda called Cosmo a ding-a-ling, which may mean a stupid person or a candy thing that is similar to a twinkie.
In Wishology Part II, cocktail weenies are used to get crap past the radar numerous times. Lets list them, shall we?
Mark refers to them as "tiny tubes of spicy flesh."
Then Timmy uses them to fight of the Eliminators:
Timmy: Now, let's see how he likes my weenies! [Beat] Not the Catch Phrase I was looking for, but... whip the weenies!
"Jimmy/Timmy Power Hour 2" had a lot of these moments.
"That was the most reckless I've ever been with a hot dog!"
The ending at the dual dimension Friday the 13th dance had Carl whisper something to Wanda. Wanda looked squicked out and turned the tiny captured Prof. Calamatus that was in Carl's jar into a tiny Jimmy's mom.
Timmy's Dad: It's hard to keep nuts in your mouth when you're crying.
The episode where Timmy's Mom becomes the best chef in the world includes a scene with a flamboyant chef skipping through a field of sausages, which he claims "makes him feel like a little German girl". Not so much getting past the radar as flipping it off.
In "Hex Games", Vicky tells Timmy rather than giving up her crown to him, which he win in winning a skating competition to win the park from her rule he'd have a better chance of "some twelve-year-old wasteoid" falling from the sky and plowing her into the pavement in which Francis collides with her when he crashes into her at full speed from above, leaving her in a crater.The main definition, taken from the movie "The Breakfast Club, basically means "pothead".
In The Big Problem, when older Timmy, looking like a middle age geezer, encounters Vicky, a teenage girl, she blows a whistle and proceeds to go Jackie Chan on his ass. It doesn't help that the first time, he comes into his house, a total stranger for all she knows, and the second time, he hugs her. It just hit me that Vicky was blowing a rape whistle.
In "Mighty Mom&Dyno Dad", it takes Noodle Implements dimensions when Timmys dad tells him where the babies come from...and Timmy asks what's the machine for ("I'll tell you when you're older!"). And that's only the heaviest item from this episode...
In "Beddy Bye", Timmy is sent to bed at 21.00 sharp, to his chagrin. Timmys dad tries to console him: "Wait until you get older and your body betrays you in other ways!" Naaah, this trope surely wasn't meant...
"Crime Wave". As if it's not enough that Timmy wishes himself out of the bath to get a new comic (and prompt is naked throughout the rest of the episode since he forgot about this detail), "Nice Moon!" And a wienermobile.
"Miss Dimmsdale", where Timmys Dad enters a beauty contest (on the quite argueable grounds that making it girls-only is so sexist). The radar must have been taken out by a nuke.
Bit farfetched: "Twerp" by default is an annoying kid, but do you know the Kurt Vonnegut definition?