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 ?
dodane przez Steve the Kevin Hater październik 27, 2007
4 more definitions
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>
dodane przez asshat styczeń 22, 2003
jackass who torments aol chatrooms
damngoodlookin is an asschin
dodane przez bobby jane styczeń 18, 2003
A fold of fat underneath the jaw line caused by an excess of body fat. Double chin.
"That fat muthafuckah has a humongous ass chin!"
dodane przez Tunmy AuGratin luty 23, 2006