Stink check
When a person feels an itch in their butt crack and scrapes a couple of fingers across their asshole only to sniff them therefore confirming that they now have shit smelling fingers. Everybody in the world has done this or they are an outright liar!
Guy #1: Did you see Dennis scratching his ass? He just smelled his fingers! Guy #2: He does that all the time. He's doing a stink check. Guy #1: Gross...... he just handed me a beer!
Stink check by JoeyBomm June 8, 2020
Get the Stink check mug.