Top definition
In order for the shit exchange to properly take place, the receiver must be performing a three-point balance on his/her head. The "shitter" then takes a massive dump on the receiver's asshole and then uses a large wooden dowel to push the shit into the receiver's ass.

Optional additions to the shit exchange can include:
-oral cleanup
-re-shit exchange (receiver becomes shitter, and performs the shit exchange with the original shitter's shit back into the shitter's ass)
James: I just ate three straight Mexican meals and i have to take a huge dump.
Paul: Well why dont you just give me the ol' shit exchange then we can clean it up with our tongues and then maybe have some gay anal sex.
by Philip Ochrango December 06, 2007
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