stinky thumbs 

this is a freakin rip, katie zeng.

I just called you stinky thumbs.

stinky thumbs by B'jackoff November 17, 2004

Mississippi Stink Thumb 

A variation of the shocker. However, instead of using the pinky finger for the anus, using the thumb.

I showed her some southern hospitality when I gave her the Mississippi stink thumb.

Mississippi Stink Thumb by The Wobbly H Pirate February 9, 2005

stink thumb 

When you reach around to jerk yourself off and you accidentally give your asshole the thumbs up

Smell that? Thats stink thumb

stink thumb by garygohome September 20, 2013