2 definitions by Bithicus

Top Definition
1. Having a chin that resembles an asscrack.
Wow, you have a really ugly bumchin under your mouth!
by Bithicus March 10, 2005

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1. Achieving high or extreme levels of "bith" or P.M.S.
2. Being a bitch but not actually being called a bitch.
Your mom is a bithsauce to the ultimate max.
by Bithicus April 21, 2004

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