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2.
Group sex with four people. A combination of the words "four" and "orgy."
Rob: "Did you have the sex last night with your girlfriend?"
Westley: "Dude, my girlfriend and I hooked up with another couple. We totally had a fourgy!"
by CrazyJay November 20, 2010
 
1.
orgie with four people
fourgy with kerry, ben craig and craigs spandex
by Thomas Shakes April 10, 2006
 
3.
Four strikes in a row during bowling, especially Wii bowling.
After getting a turkey, The Dude scored a fourgy on Wii bowling.
by Bubba Dude September 04, 2009