Greasy Snake 

A very a sneaky person. Often does irritating things to try to piss you off

Wow!! how the hell did clay get that goal in NHL 08!! He's such a Greasy Snake

Greasy Snake by cplsniper March 15, 2010

grease snake 

An individual whose predominate feature is excessive greasiness. Often lives in squalor, with little regard for basic hygiene or physical appearance.

"Yo, that grease snake came in here and slimed the place up real good. Must be a tree-planter or rig-pig."

grease snake by Hubert_The_Hippo August 10, 2009