When u grab your sack and squeeze forcing your balls to go tight against the skin, causeing THE BRAIN!!!
by J-dawg January 1, 2005
Get the the brainmug. the art of grasping the top of your ballsack and squeezing the testes outwards until your little friends resemble a brain.
by chuckles09 June 24, 2007
Get the the brainmug. by NickX901 April 30, 2006
Get the the brainmug. A super-smart talking mouse from cartoon animaniacs.
Do they still make that show? I haven't seen it on TV in the last seven years.
Do they still make that show? I haven't seen it on TV in the last seven years.
by Gumba Gumba April 8, 2004
Get the the brainmug. by xWildgun March 18, 2003
Get the the brainmug. 