A slang term originating from rural Ontario, Canada, a backman is a particularly vile promiscuous girl. It comes from the fact that a backman is said to spend most of her time on her back, and also has the sexual appetite one would usually attribute to a man. Back+man= backman.
"I feel like such a backman, I've had five cocks inside me and not one of them was my boyfriend."
by dann0mack January 18, 2009
a giant slut who likes penis in and around the mouth. backmans usually will recieve anal daily.
man, that laura girl ia real Backman
by big benny benster 456 October 02, 2008