Running around with a turkey baster filled with your brothers semen while trying to impregnate your girlfriend. Oh, two lesbians usually do this. That last part was kinda important.
A man/boy who can not do anything correctly. Not a reliable "friend". Someone who is incapable of telling the truth. Who can not keep an erect penis. Who can not understand a restraining order. May or may not have small hands. A complete loser, who has their stuck up their ass. A.K.A. a douche bag.