Action. To straddle someone's face and to place your asshole over that person's nose while they sleep, then as they awake from a punch in the groin...well you get the picture. Ta-da! An impossible sit up.
by Godsbest September 2, 2003
Get the impossible sit-up mug.by mcfl1y January 29, 2022
Get the literaly the completely physically TAS imossible situation mug.