Butt Nibbler 

Someone who prefers to stick their tounge in the wrong orriface...

Shut up Worm you Butt Nibbler

Butt Nibbler by Kelly February 5, 2004

Butt nibblets 

Butt nibblets are the small particles of poop that you find floating behind in a toilet after someone has flushed.

Man Ed must have had corn last night he left a ton of Butt nibblets in the can.

Butt nibblets by Captain Spanky January 26, 2007

buttnibbler 

one who nibbles butts.
a person who is a wicked dork, dufus, and moron.

Harry Potter, you big tosser, don't be such a buttnibbler.

buttnibbler by manz13 January 3, 2010