A duplex communication system is a system comprised of two connected parties or devices which can communicate with one another in both directions. (The term duplex is not used when describing communication between more than two parties or devices.)
Example of an duplex device: Phone
by 02k^ November 09, 2006
Two separate turds coming out of your asshole at the same time.
Ahh, fuck It's a duplex.
by Cherylyn17 April 17, 2011
When a woman gets the thin piece of skin between her anus and her vagina removed creating one large orifice.
I went to go down on that chick and found out she has a duplex!
by Drowsy Hollar March 01, 2008
Half finished housed that are normally found in the projects or ghetto because the construction workers were scared off by the two black guys who stare at them all day.
I live in duplex, i hate winter...
by freshman October 10, 2003
When one person sits down to take a shit, and another person sits on top of that person and shits through their legs.
Suzie was pooping on the toilet and John sat on her lap and did the same. They performed the Duplex.
by Brian Brown November 19, 2004