In no particular order:
1) Arguing with Craig over which of them stinks more
2) Maxwell: YER A FACKING LIL FREAK MUG WANKA
Science: -waves hand in front of face- Yer breath smells yeah? Plaque. Attack. PLAQUE ATTACK.
3) Orlaith: SHUT UP, AND LEAVE ME. ALONE!!!1111!
Science: uhh, NO? You said yer peace lemme say mine, yeah? You wasn't sayin that YESTERDAY WHEN YOU WERE SAYIN WHAT YOU WERE SAYIN THOUGH INNIT.
Orlaith: WHAT WAS I SAAYING?! -storms off-
Science: ...HOW EVERYBODY'S, BACKSTABBIN EVERYBODY. HOW EVERYBODY'S-- -trails off-
4) When him and Vanessa didn't want to wash the dishes and Derek got annoyed by it:
Science: ♪I ain't tidying this shhh. I ain't cleaning shhh♪
Derek: It's not your suit...
Science: I said shh, INIT... ♪I ain't tidying shh. "I ain't doing shh. I ain't tidying this shhh!♪
Derek: SHUT UP Science!
Science:NO MISTA BALDY HEAD
Derek: There's so much noise in here...
Science: So? IT'S GOOD TO BE LOUD AND PROUD, AND BE ON THE PROUD.
-Derek walks away-
Science: (Mexican Accent) Don't you think my friend? Hey, you better talk to me man. Don't you ignore me man.
5)