Kentucky thumb

When you're hitting it from behind and your slap her ass, to which she responds by yelling "just stick a thumb in it!"

Was banging my girlfriend last night and I have here the Kentucky thumb

by Captain Hazelwood May 20, 2021

Thumb Plumb

A thumb plumb is when there is a lump of shit left on the thumb after thumbing an arse.

Holy shit, you should have seen the size of the thumb plumb she left.

by Biggaybear April 2, 2013

thumb-holing

Sucking up. Kissing ass. Figurative anal pleasuring

Kyle is always thumb-holing the boss like it's going to get him a raise!

by Petegny March 24, 2020