Top Definition
If all roommates of one residence have sex with the same person.
(In a four person house)

"If you three already had sex with her, then I just completed the sex monopoly last night."
by Azans September 03, 2006
5 Words related to sex monopoly

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.