When you are having sex, and you ejaculate all over the walls and you grab the girls hair (as if shes a paintbrush) and paint the room with her mouth (she licks the semen off of the walls).
"This girl and I were going at it so hard that when it was time to ejaculate I blew my load all over her bedroom walls and then grabbed her hair and made her do the Philadelphia Painter"
by Paparazzi69 November 2, 2009
Get the Philadelphia Paintermug.