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A caring term for ones best friend. Often used by Hayleyface and Tristyface.
1.Hello bumface, how are you today?
2.You're a big bumface and I lovesya

by Hayleyface December 19, 2006
One with a large rear end so big in fact that when they bend over the world is blanketed in darkness.
Amy, Aimes, Mannfred etc
by Amy Mann February 06, 2004
a person with a bum shaped face...bumface
yo mumma has a ugly bumface
by fartbomb! October 20, 2006