Front rump 

The butt like shape protruding from the front of some peoples pants.

Eeeeew! Look at the front rump on that fugly chick.

Front rump by aunty social April 8, 2006

Front Rumple 

Front rumple is when you fart and it goes forward instead of to the side, and it makes that awkward flappity noise. It can happen to a guy or a girl, and it needed a name!

"Dude, i totally just farted and it front rumpled"

"Hahaha, i just front rumpled, hold your nose, it's a good one"

Front Rumple by Ms. Cutthroatt November 2, 2009

Frontpumper 

A person who display a motion of a forward directional thrust at the hips while doing activities

Would you just look at that frontpumper

Frontpumper by Jd688 July 30, 2012