When your buddy picks you up…… after you just got done pounding out the local town whore…… and unbeknownst to you, he’s still wearing the rubber and he rips it off and launches it into the Gennesee River.
Dude, what the fuck are you doing? I’m launching this Magnum into the Genesee river. The ole Genny Cream Ale Slingshot!!
When you shit into a slingshot then ejaculate in the slingshot on top of the shit, and then attempt to launch the concoction toward a consenting person of choice (commonly a partner or signicant other).
"I am going to perform a Tel Aviv Slingshot you, and you can't stop me!" Yelled Person 1.
"Please do, I give you consent," Replied Person 2.