when a girl wheres pants too high, so that the waist of the pants is over the bottom part of her stomach, to form an area between the vagina and stomach known as the vagumach. you can see this on many college girls who have already surpassed the muffin top, and who are now onto bigger and better things.
When a person's gut hangs down so far, or there is a lot of fat in the bladder area, causing a Vagumach.
Trishelle: Why does her jeans go like that? It looks like she's preggerz!
Sarah: Trust me, she's not.
Trishelle: How do you know that's not an unborn fetus?
Sarah: Cause it's her Vagumach.