WallStreet exchange 

The act of farting directly into someone else's asshole.

As Kelly relaxed on the couch, I laid quietly down behind her and she bacame an unwilling participant of the WallStreet exchange

WallStreet exchange by HershySquirt May 6, 2016

Wall Street Exchange 

A sex act in which one participant shits into the other's anus, usually in a solid form.

"Hey bro, I tried shitting in her to assert dominance. It was awesome!"
"Damn dude! you guys did the Wall Street Exchange!"

Wall Street Exchange by Doombox3 July 24, 2022