1 definition by Josh and Jen Wildman

While doing a sit-up when you bring your body up, the pressure on your stomach causes you to release a fart with a very unpleasant steamy surprise.
Dakota had a PT test early that morning, while doing his sit-ups he had the sudden urge to fart but sadly ended up doing a shartup instead...needless to say he had a shitty morning.
by Josh and Jen Wildman January 21, 2012
Get the Shartup mug.