Definitions by D. Wroughton

The Mule 

the butt of a gun.
to "hit someone with The Mule" is essentially pistol whipping, but it should be noted that when hitting someone with The Mule only the butt of the gun is used.

"Bitch wouldn't stop running her mouth so I had to hit her with The Mule."

The Mule by D. Wroughton July 27, 2009