The entirety of the second short of "Your IQ's Like 5, Right?".
"I was gonna be a table. :("
"Chin up, Hiro. It's obligatory sex night."
From The Young and the Eggless: The note on Summer's door reads:
Pay your rent, bitch.
"Irregular tampons on sale now, marked down to five for the price of two! If you've got an irregular vagina, this is one sale you can't afford to miss!"
When Shin is trying to avoid going to a piano recital starring Ai, his mother comes up with a good excuse... only to have it undermined by Ai's bodyguard dressed up as a box of chocolates luring Shin to the limo.
The sign above the stage:
Clap, or we will find you.
Shin once made a cameo appearance in Sailor Moon, giving poor Chibi-Usa his "elephant dance" and after being pulled away by his appalled mother, shouts "I'll punish you in the name of the moon at home!" Refreshingly shocking. Here's the clip, because it has to be seen to be believed.
"Oh, but I'm hungry right now! No wonder supermodels are such bitches."
"If you don't start giving me an allowance, I'm gonna tell dad that you hide money behind the scroll for your boobie job."
Cut to the wall scroll, with the text BOOBY JOB MONEY STORED HERE
"All I remember is falling asleep during that 'women in prison' movie..." (LESBIANS!)
"...Who was that?" (SCHIZOPHRENIA!)
"My tomato alarm is ringing too!" (TOMATOES ARE FRUITS!)
The majority of "Happiness Bunny's Revenge".
Happiness Bunny: OJ?! DO I LOOK HUMAN? Tell me, what am I?
Penny's Mom: ...A...A bunny?
Happiness Bunny: That's right, a motherfuckin' bunny! I poop pellets, screw like a terminal patient and drink carrot juice! CARROT!
"Let's Act Crazy".
Yu's brief acting montages, including "An Abortion Of The Heart" with her Joisey accent and using a sleeping Hima. At one point, a caption appears pointing at Hima saying "call child services for her". This is followed by Yu's monologue of how it's her decision to abort Hima even though everyone is saying "she's too alive and too post-natal", and the only way to teach her about independence is to abandon her to become a pop star.
From Happiness Bunny's Revenge's Revenge's Revenge: With a Vengeance: Shin using movie and TV show names with numbers while counting when he and Penny are playing hide-and-go-seek:
"The High School Years" has a foul-mouthed Alpha Bitch questioning why Shin's crush, who was originally a college student, is suddenly back in high school while screaming at her friends for being bitches.
From the second short of the first episode (original version), when Shinnosuke was trying to eat beans for breakfast: