look up any word, like the eiffel tower:
 
3.
To be Fat or Overwieght.
Holy Shit! Look at that Whompy Bitch.
by Mevan July 19, 2006
 
1.
Adverb Distorted. strange. Out of the ordinary. Just plain fucked up.
Dude, Megan Fox's thumb is TOTALLY whompy. It looks like a penis with a toenail. Probably the only part of her body that ISN'T plastic.
by Jessica Browning February 11, 2010
 
2.
The word version of the sound wa-wa-wah....

Sound used for a variety of purposes, for example, but not limited to, when someone screws up or does something lame. Can sometimes be heard on game shows.
"I can't find my tractor."

"That's whompy."
by SAJM March 02, 2008