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A person whose ass constantly looks like a clown. Or Nemo from Finding Nemo.
Bozo looks like my ass. Weird.......
by James F. Casey December 30, 2003
Someone who is extremely silly and loves to say silly ass alot.
"Hey Silly Ass!!"
by Spongebob Silly Pants March 03, 2010
A crazy motherfucker who giggles a lot
the giggly boy is a sillyass

mom don't be such a sillyass
by That Dark Haired Chica December 31, 2003