bum chin 

When you squeeze together either sides of your chin and it creases.
This resembles a bum crack and it called a bum chin

Joshua has a bum chin

bum chin by Gemmer September 2, 2006

bum chin wank 

you get your nasty girlfriend and stuff her in the butt, then proceed to use your shit-laden corn piece to have it away with her massively large chin bum until u cum all over her hidious face.

"oh man, that ugly bitch caroline gave me such a relentless bum chin wank i discharged all over the fucking show"

bum chin wank by marcus clefticus March 5, 2008

bumchin 

A chin that look like an arse (in some cases). In others, they can be very sexy and attractive. A nice facial feature (most of the time)

Reow! Look at Matt Bellamy's sexy bum chin!

bumchin by Sophy June 23, 2005

Benny-Benny-Bumchin 

Alabama's largest producer of Remy-De-Martyn Hobo Wine. The name originates from the style of chin worn by Magic Benstead, a curse he has had to bear since birth.

HOBO!BENNY-BENNY-BUMCHIN! Hobo Wine... do do do dooooo!

Benny-Benny-Bumchin by Shadow Of Death September 27, 2006

Bumchin 

1. Having a chin that resembles an asscrack.

Wow, you have a really ugly bumchin under your mouth!

Bumchin by Bithicus May 13, 2005

bumchin 

Occasional nickname for Ben Affleck.

Wow, look at Ben Affleck's chin!

bumchin by Chris May 13, 2005

bumchin 

arse on ones face, often defined as a second bum.

MITCHEL HAS A BUMCHIN (hey jack)

bumchin by mitchelhater#24601 November 19, 2003