What is Clownfucker?
1.
somebody who is both incredibly stupid and extremely unlikeable. A total joke.
What kind of clownfucker borrows your credit card and uses it to rent a hotel to bang your wife in?
See
2.
One who fucks clowns.
"That Randy, he sure loves to fuck clowns."
"He's a clownfucker, ain't he?"
"Best damned clownfucker I've ever seen."
