2 definitions by Milwaukee Guy

When a guy stacks two women on top of each other and is able to have vaginal sex with both of them during a threesome. If the guy gives either or both girls a creampie the duplex is said to be occupied, otherwise, it is considered vacant. The girls can be stacked in any manner; front-back, front-front, or back-back and they can face upward or downward.
"I was able to fuck Gina and Brooke in a Milwaukee Duplex. I occupied both of them; I hope they are on the pill!"
by Milwaukee Guy June 12, 2007
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Same as a Milwaukee Duplexexcept that it incorporates oral sex instead of vaginal sex.
"I didn't get to go all the way but Michelle and Gina gave me a Polish duplex last night."
by Milwaukee Guy June 12, 2007
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