look up any word, like cunt:
 
1.
Girls that like it threw the backdoor (anal sex)
My sister likes being a backdoor bitch.
by Alex R. February 10, 2004
 
2.
a girl who flirts with everyone, makes you think shes commited to you, but has half a dozen other boyfriends you don't know about. A cocktease or cock tease. AKA BB.
It's really too bad that you got burnt by that backdoor bitch.
by King Kong March 06, 2004
 
3.
A woman who pretends to be your friend to you face, but is always using sneaky 1 liners that are nasty.
Heather pretends she likes my cooking and then tells me she just heard about a new cooking class for beginners I should try, she is such a back door bitch.
by vitas smith August 08, 2010