Definitions by Thumbsy-bumper

Thumbsy-Bump 

When you and a bro each stick their thumb up their ass and bump knuckles while turned backwards

Me and and the bros always thumbsy-bump at the end of a party. Last night me and kyle did a frontwards thumbsy-bump, our dicks touched but no homo.

Thumbsy-Bump by Thumbsy-bumper June 19, 2019