when ones groin becomes painfull after an over the top session of oral sex (without brushing ones teeth). this can cause the penis to become infected and fall off.
"hey that guys groin strain has made his cock start to rot off, lets crucify him in the street and thow used condoms at him". "yeah totally"!
by muriel May 4, 2007
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An injury sustained during sport activity whereby another player fouls the ball holder by yanking their penis in an effort to make them drop the ball.

The injury could also be incurred by allowing a midget to swing from the flaccid penis like they are Tarzan.
He got a groin strain when a player from the other team gave him a willy tug! It will take weeks for that groin strain to heal itself back together internally!
by Casej.music January 29, 2017
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