Ulrich: What about Mrs. Hertz? Hasn't she got a new haircut? Yumi: No.
The Kankrelats in episode 11. They still are the comic relief amongst the monsters, slamming into each others (twice) or tripping themselves.
Odd jokingly making his "will" in case he's drained of code. He'll leave his basket of dirty laundry to Yumi. She'll know what to do with it.
"Chaos at Kadic"
Jim announcing to Mr. Delmas that they've received a thousand pink flip-flops (size 38) thanks to XANA making their computers bug.
What, Mr. Delmas announcing that they received 1,000 kilos of hay to Ms. Hertz not funny enough?
"An Assured Professional Future": Odd is piloting the Skid while they're carrying a virtual beacon that mustn't be shaken too hard...
Odd: What about a looping? Ulrich/William/Yumi: ODD!!!
"Espionage": The look on Odd or William's face while they babysit "zombie" Aelita is worth a chuckle.
Ulrich, Aelita, and Yumi are trapped in the forest because none of them know which one of them is the spectre, so Yumi decides to ask personal questions to figure it out. First she asks Aelita:
Yumi: Aelita, what do you call Jérémie when you two are alone? (the two look at Aelita) Aelita: Proxy-pie. (cue silence) Ulrich: Excuse me? Aelita: I said, Proxy-Pie. (cue Yumi, Ulrich, and everyone watching, especially Jerlita fans laughing their pants off)
And this exchange:
One of the Odds: (to the William clones) William, have you kissed Yumi yet? Both Williams: (with the same dismissive wave and hesitation) Uh, pass!
One of the Williams: Odd, how many girls in your grade have you dated? (One of the Odds names nearly all the girls, hesitating here and there) One of the Williams: Aha, you must be the fake! One of the Odds: No, no. I'm doing my best! (points at his double) Help me, you!