What is Irish Roulette?
1.
Where several men have sex with a woman unprotected, and the loser is the one who impregnates her.
"Man, I just found out I lost that game of Irish Roulette, I'm going to be a dad now"
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2.
A concept similar to that of Russian Roulette, but a semi-automatic firearm is used in place of the six-shooter. While the odds vary depending on the quality of the weapon itself, there is rarely a clear cut winner.
"So who won that match of Irish Roulette yesterday?"
"... It was a draw."
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