sexual activity involving three people. no more. no less. 3 women. 3 men. 2 women 1 man. 2 men 1 woman. whatever the grouping - all must engage in sexual activity with one another for the activity to be a 'menage a trois'. otherwise see 'gangbang' or 'gang bang'.
jenny said it was fun having a 'menage a trois' with mike and rick. however, since mike and rick didn't mess around jenny was really 'gang banged'.
by x1x82 January 15, 2004

n : household for three; an arrangement where a married couple and a lover of one of them live together while sharing sexual relations
by Sophie cat July 17, 2006

by Keovani February 04, 2003

household for three; an arrangement where a married couple and a lover of one of them live together while sharing sexual relations
Boyfriend: "Dude, my girlfriend suggested we menage a trois"
Friend: "One of her girl friends?"
Boyfriend: "Nah man, one of her guy friends!"
Friend: "Rough."
Friend: "One of her girl friends?"
Boyfriend: "Nah man, one of her guy friends!"
Friend: "Rough."
by BadAssBrass January 12, 2011

by jack stossel September 21, 2007

by Charlie Sheen September 05, 2003

something that should happen when a dude is in bed with two intoxicated girls but often doesnt when that dude doesnt try anything
My boy was bragging about how two girls slept in his bed, but he is too much of a skirt to have a menage a trois. They should have just baked everyone else in the house breakfast instead of sleeping next to each other.
by smitdawgthedawgpoundandthefabulousgrammatiks November 28, 2004
