I have several random phrases that I spit out. Some are original some not.

"Go bite the curb." (Friend)
"Never spit in a mans face unless his moustache is on fire." (Original Bauldars Gate)

lol go into a random group of people and say "I like pizza"

"Mein Loffel is zu gross" (my spoon is too big in german)

and of course my signature is classic.