The following is a lista of some of their greatest moments. Most of these are from the books. However, these first two are from the DH1movie. Enjoy!
Moody: Fair warning: it tastes like goblin piss.
One twin: How do te know what that tastes like? *sees Moody's glare* Just trying to ease the tension.
Both: *after transformation* Wow. We're identical.
Ok. Here we go with Citazioni from the books. Don't forget to comment. Also, add any I may have missed.
"Fred, te next," the plump woman said.
"I'm not Fred, I'm George," detto the boy. "Honestly woman, te call yourself our mother? Can't te tell I'm George?"
"Sorry, George, dear."
"Only joking, I am Fred," detto the boy, and off he went.
"Blimey," detto the other twin. "Are you--?"
"He is," detto the first twin. "Aren't you?" he added to Harry.
"What?" detto Harry.
"Harry Potter," chorused the twins.
"Aaah, has ickle Ronnie got somefink on his nosie?" detto one of the twins.
"Hang on, I think I remember him saying something about it," detto the other twin. "Once--"
"Blown up a toilet? We've never blown up a toilet."
"Great idea, though, thanks, Mom."
"Never mind that, do te think he remembers what You-Know-Who looks like?"
"We'll send te a Hogwarts toilet seat."
"We got Potter! We got Potter!"
"You must be good, Harry, Wood was almost skipping when he told us."