A dandruff covered cowlick that results from rolling out of bed and going directly to work without combing one's hair.
"Wow Billy, that's some olli you've got going on today! You look like you stuck your finger in an electrical outlet!"
by H. W. Jablome June 16, 2012
 Get the Ollimug.
Get the Ollimug. by Joe January 12, 2005
 Get the olliemug.
Get the olliemug. by Lou December 18, 2004
 Get the olliemug.
Get the olliemug. by FatherK January 3, 2010
 Get the Ollymug.
Get the Ollymug. 

