Oily substance in the dark recess area between the scrotum and inner thigh, that has its own unique smell left on the hand after a scratch. Commonly referred to the residue left behind on clean surfaces when mouth-breathing imbeciles touch things they shouldn't. Same as crotch grease.
The yeti left some crotch oil fingerprints on the ceiling while simply changing the light bulbs.
by Bo Regard April 14, 2009