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!"
See
Random Words:
1.
When all the toilets in a given bathroom have been defecated in without being flushed. One can omit urinals if this was done unintention..