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2.
Sexual intercourse or activity involving three people.

Pronounced: Me-na-je t-wa
"3 people in a menage tois"
by Anonymous2616 August 09, 2006
 
1.
It's actually spelled 'ménage à trois' and it is the French term for 'threesome'
"It's ménage à trois, not menage tois you stupid poo."
"Eff toi!"
by maaan February 27, 2007