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2.
A conceited girl with a sense of entitlement that knows no bounds.
I've gotta dump this Motherfucking Princess.
by Mr. Larz Blackman July 10, 2008
 
1.
The one and only girl in a guy's life. Does not necessarily imply a bitch or a girl of high maintenance. Referenced in the pop song "Girlfriend" by Avril Lavigne.
Yeah, she's his motherfucking princess!
by JRRL August 09, 2007
 
3.
A Woman or Gay Guy who wears punk / rock atire however is still commercial.
Avril Lavigne - Girlfriend "Hell Yeah, I'm the Mother - Fucking Princess"
by Lrb22 December 11, 2011