When you poop into someone else's butt and they poop it back into your butt but hold it so that the poop is touching both of your butts at the same time.
The act of spontaneouslybreaking into musical-esque singing and dancing in everyday conversation for no reason whatsoever.
One who performs these acts is known as a "Benson".
Bro A: How'd that date go last night?
Bro B: It was pretty good, until I turn around and she's Bensoning all over the place.
Bro A: Like full-on Bensoning?
Bro B: Yeah, it looked like I was on freaking Broadway.