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1.
a threesome:

2 guys and a girl
2 girls and a guy
3 gay guys
2 lesbians

the logistics are a pain in the ass, though
Person One is a slice of bread... Person Two is a slice of bread... Person Three is the ham...

Get the picture?
by Terra Imperator May 14, 2004
35 12
 
2.
a heterosexual three-way sex session, involving either two men and one woman or two women and one man; as opposed to a "choo-choo' (which involves three gay men or three lesbians)
Last night I got sandwich action with Gina and Maria!
by Silky Smooth January 07, 2004
26 17