Top definition
A member of a gang who mastrubates on the sides of other members legs without them knowing. This gained popularity in southern california in the past 5 years. They may also mastrubate in2 members hair, ears, nose or hands.
Dude I saw emilio side gangster that new guy.
by chachaddict April 14, 2009
Get the mug
Get a side gangster mug for your Uncle Manley.