Verb: When one grabs a person's testicles firm in their hand and knocks them against the person's own taint, as if knocking on the door with a traditional door knocker.
Tyler: "Bro, they tried this new thing called "taint knocking" on me last night."
Brett: "Yeah? How was it?
Tyler: "Not great......"
Brett: "Yeah? How was it?
Tyler: "Not great......"
by Clit Mckinnon May 19, 2021

by Jacob is daddy June 6, 2018

1. The accumulation of sweat, dead skin, pubic hair, feces and urine that collects in the area between the genitalia and the anus.
2. A disgusting person.
3. A person that behaves in slimy and questionable ways.
2. A disgusting person.
3. A person that behaves in slimy and questionable ways.
by gxory October 24, 2016

When you find out a girl has already slept with a close friend. (male or female, it's still beef)
See Tainted Sausage for a man.
See Tainted Sausage for a man.
Dude 1 'Bro I was gona sleep with Chloe, but then I found out you already had'
Dudette 1 'Ah man that sucks, doesn't matter though, she was tepid at best'
Dude 2 ' When a friend taints your prospect beef it hurts hard, ahh... Tainted Beef'
Dudette 1 'Ah man that sucks, doesn't matter though, she was tepid at best'
Dude 2 ' When a friend taints your prospect beef it hurts hard, ahh... Tainted Beef'
by Torakvf44 September 20, 2018

When a hoe ass bitch shaves all of that sweet puss but leaves a long soul patch looking thing on her taint.
by Tainted slipper September 25, 2015

When a male ejaculates on on the skin between a woman’s vagina and asshole (taint) with this “white paint” ... to paint the taint
by Mlit February 19, 2018

by Janis tanter September 14, 2018
