The Bae and Switch

Two Close Friends where one of them is is about to or is already screwing some chick/dude, and without the other (3rd party) person knowing, they swap with each other.

The "Bae and Switch"

The Bae and Switch: I was stuck in a room with this fat chick, and I didn't wanna fuck her, so I hit the light, and pulled a Bae and Switch with my Wingman.