What is Manhattan Exchange?
1.
A sexual act in which a male or female and their partner spread their legs apart and touch anuses, then begin simultaneously shitting- thus forcing one another's shit into their partner's anus.
"Last night during sex Cassie and I stuck our asses together and did the old Manhattan Exchange!"
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Random Words:
1.
A person who inserts their finger/fingers or some object into their anus while masturbating.
That guy is such a butt wanker.
See wanke..