the act of a male grabbing his ball sack near the base squeezing out his testicles until the the ball sack skin is smooth in a similar shape to Darth Vader's helmet. Originally performed in a barracks in Quantico, VA 1996.
The first time I showed Darth Vader's brains to my girlfriend she thought It was gross, but now she loves it and asks me to do it all the time.
by Paul Sanchez March 22, 2010