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When a guy has an erection with so much blood flow that it literally feels like his penis is about to explode. It is generally quite painful.
"The pain of grenade dick makes it much more difficult to conceal my hard-on than a typical erection."
by The Real Mister Mister August 24, 2017
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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