When one thinks it would be funny if they jacked off while playing blackjack. Everyone else in the semicircle must take your sweating, shaking, and grunting as a sign of having a bad hand.
Gambler: What's that guy's problem?
Other Gambler: Either he just stayed with eight, or he's just hit 21st base.
Other Gambler: Either he just stayed with eight, or he's just hit 21st base.
by Compulsive Gambler July 16, 2010
Get the 21st basemug. by EAXSWC September 24, 2006
Get the 21st basemug. Giving yourself a blow job. Then your penis blows up. And then the world blows up. And a penis takes its place.
by Please. Stop. April 4, 2017
Get the 21st basemug.