by mike July 27, 2004
When a girl is giving a guy a blowjob the guy doesn't say he's going to come so unexpectedly the guy comes in her mouth. She's spitting the come out making her look like a mad dog with white foam coming out of it's mouth.
by Torolf September 2, 2008
swishing a mouth full of cum around, showing your teeth, and saying "grr mad dog" while frothing white all over your face
by y3nna March 31, 2007
Get the mad dog mug.
by gitcha glitch January 25, 2003
by Fred77054 September 6, 2006