look up any word, like darude - sandstorm:
 
1.
1. When a person has been penetrated by two males.
2. A term used, normally used in first person shooters, when 2 players on the same team dominate the game.
1. My buddy and I just twin cocked that girl.
2. My buddy and I just twin cocked your entire team!
by lilhoss2130 January 21, 2010