when to guys get a peice of pvc pipe, shoves one end up each others ass, and then defecates in it, letting the feces mix in the pipe. how anyone gets pleasure out of this. i have no idea.
"Dude, i cant believe gay john and fred did the monroe exchange!!!"

"thats nasty dude. never say anything like that again"
by straight, but messed up January 18, 2009
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Similar to a monroe transfer, however, both partners have the same tube up their asses and they both defecate. In the case of diarrhea, some poo may be "exchanged" into each others rectum. Most enjoyable.
Paul and Patty decided to try a Monroe transfer but the tacos they ate the night turned it into a Monroe exchange.
by Q Daddy March 22, 2007
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Similar to a monroe transfer, however, both partners have the same tube up their asses and they both defecate. In the case of diarrhea, some poo may be "exchanged" into each others rectum. Most enjoyable.
Paul and Patty decided to try a Monroe transfer but the tacos they ate the night before turned it into a Monroe exchange.
by Q Daddy March 22, 2007
Get the monroe exchange mug.