Top Definition
Multisex. A partner in a strong relationship, who wants to have sex or realatinship with other men/girls, and both partners are agree on the matter. They both like multisex.
Multisex :
I both are agree to praktise sex with other ppl, then it's multisex

If not both like this idea, then the partner who praktis this, is unfhaitful.
by Urbme111 September 06, 2009

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