Irish Threesome
Sleeping with two or more people within 12 minutes of each other. Derived from irish twins.
What did you do after that party? Wait, you nailed a chick from Suffolk and a Canadian 10 minutes later? Amazing! You had an Irish Threesome.
Irish Threesome
Having sex with two girls within a 3 day period.
Cody got his penis chopped off when Verna found out he had an Irish Threesome with her and Laura.