The extended version of Hexxus'sVillain Song, Toxic Love (which wasn't in the movienote it was going to be, but the censors told the songwriters to change a few lines and shorten the song for time reasons, but is available on the movie soundtrack), contains the line "a special kind of horny".
In the opening of Puss in Boots, Puss wakes up and you see a non-anthro female cat right next to him. Worse still, he is seen putting on his belt upon getting up, suggesting that it was off before. What exactly were those cats doing?
Additionally, a subtle joke in the opening sequence seems to reference Getting Crap Past the Radar: the brand name on the oven is "Hotternell" — while the film's PG rating would certainly allow for language as mild as "hell", The Hays Code that was in effect during the film's period setting would not. This is actually a combination of this trope, and a Shout-Out. Tex Avery, in that same period, managed to get away with including an Alaska town labelled as Coldernell in one of his shorts, and the Roger short in production is very much in Avery's style.
And also when Eddie is singing to distract the weasels, he says "I'm through with taking falls/I'm bouncing off the walls/Without that gun, I'd have some fun/I'd kick you in the..." He gets cut off when an object hits him on the head; Roger says "nose!" to finish the line. Smartass, the lead weasel, says "Nose? That don't rhyme with walls!" Eddie replies with "No, but this does!" and kicks him in the groin.
Baby Herman's line "I got a 50-year-old lust, and a 3-year-old dinky."
After Eddie says "Nice monkey suit," to the gorilla bouncer at the Ink and Paint Club, the gorilla grumbles "Wise-ass!"
The original cut of the movie had three frames showing that Jessica's dress hiked up to show that she was not wearing underwear. Once laserdisc made frame-by-frame viewing possible, this crept out from Under the Radar and was later edited — first by digitally putting white panties on Jessica, then by elongating the skirt so everything is covered.
"Roger, darling, I want you to know I love you. I've loved you more than any woman's ever loved a rabbit." Even funnier when you remember that the film was made in the 80s, shortly after a certain... toy for women was on the market...
There is this little gem when the Toons are speculating about the late Big Bad:
Mickey: I wonder who he really was? Bugs: I'll tell you one thing, doc: he weren't no rabbit. Daffy: Or a duck. Goofy: Or a dog. Pinocchio: Or a little wooden boy. Big Bad Wolf: Or a sheep. Woody Woodpecker: Or a woodpecker. Sylvester: Or a pussy.
Due to Executive Meddling, Osmosis Jones had to be edited down from a PG-13 in order to get a PG rating. That being said, many of the film's visual gags, puns, and humor are still very iffy for a PG rated film.
The Disney dub has Jiji suggesting that Kiki should be painted naked (she reacts with disgust). Also, when Kiki goes to stay with Ursula, they get picked up by one of Ursula's friends, who says that he thought she was a boy for a moment. She then mutters, "What kind of a boy has legs like these?"
The movie starts out with one of these moments. Kiki is reminding her friends that it is traditional for a young witch to leave home for a year. One of her friends immediately replies, "Tell the boys that!" and all the girls giggle. Kiki also gets in a Panty Shot as she's taking off, though you have to be looking for it.
Watership Down is most likely the only U-rated (i.e. for kids; universal) film in existence that has the words "Piss off!" right there and extremely obvious. (Quoted from the original book, but still.) The rest of the film is also surprisingly bloody and violent.
Near the beginning of Corpse Bride, Mrs. Van Dort gets stuck in the doorway of the family carriage; Mr. Van Dort and the driver begin pushing on her, trying to get her loose. Cut to Mr. and Mrs. Everglot (the future in-laws) observing the scene through binoculars, watching as the carriage rocks back and forth wildly. The Everglots roll their eyes in disgust and exclaim "Fish merchants!"note (The Van Dorts did make their fortune selling fish; however, in Shakespearean times "fishmonger" was also a slang term for a pimp....)
When Victor is walking through the woods trying to say his wedding vows correctly, one of the mangled versions is "I will cup your..." with Victor's hands cupped at chest level. If you're in any doubt as to what that meant, when Victor realizes what he's doing, he quickly exclaims "Oh goodness no!"
The Ice Age series does this from time to time, but does it a lot in Dawn of the Dinosaurs.
When Sid tries to milk a "cow": "I thought you were a female!"
At the end, when Ellie and Manny's daughter is born:
Sid:Oh look, it's a boy. Diego:That's a tail, Sid.
"I knew him when he was a caterpillar — y'know, before he came out."
And in a similar vein, Diego claiming to feel a "tingling" sensation whilst being trapped in a plant, pressed very close to Manny, who tells him "Don't say that when you're pressed up to me," Of course, it's revealed the next moment that the 'tingling' sensation is the plant's digestive fluids....
And a literal example in the original is when Kirby goes behind a tree to empty his dust bag, and Blanky watches, whereupon Toaster promptly hits Blanky over the head and makes a face like "Hey, that's private!"
Hotel Transylvania got way too many things past the radar, whether it be the song "I'm Sexy and I Know It" being used more than once, a living sponge who has a urine fetish, or a character putting his arm through a female skeleton's ribcage, in the region where her breasts would be if she had skin.