drinking bone 

The imaginary bone in the body that alcoholics blame for making them drink all the time.

"The drinkin' bone's connected to the party bone,
The party bone's connected to the stayin' out all night long,
And she won't think it's funny and I'll wind up all alone,
And the lonely bone's connected to the...drinkin' bone."
-Tracy Byrd, "Drinkin' Bone"

drinking bone by Nick D February 7, 2004