Having an indented or "cleft" chin that when you stare at carefully enough resembles the human ass.
I could swear Kevin had a piece of toilet paper stuck to his ass chin. Do you think he can really poop from it ?
ayon kay Steve the Kevin Hater ika-27 ng Oktubre, 2007
a second ass on the chin
you have a big ass chin
ayon kay joe c ika-02 ng Setyembre, 2004
Where you have a very deep cleft chin and it looks like a ass crack.
The advantage of an asschin is: you can blow your nose and wipe your ass at the same time>
ayon kay asshat ika-22 ng Enero, 2003
jackass who torments aol chatrooms
damngoodlookin is an asschin
ayon kay bobby jane ika-18 ng Enero, 2003