Someone living in blissful ignorance -- in the dark and feeding off someone's crap.
Sally's been a mushroom princess, gobbling up Andrew's lies and living in ignorant bliss.
by Puffet December 10, 2010
1 more definition
Its what they call girls who like a sausage in the calzone...
I brought a guy back from the club last night, He made me a mushroom princess.
by MindFuck69 November 09, 2010