(N. Noun) A phase in which every non feminist female enters whereas they want to "fool around" and otherwise "have fun" from the age of puberty, up until the age of them wanting to "settle down". So much so that even if Mr. Right was in their face, they wouldn't even know he existed.
Jason: Dude, I was on a blind date with a woman and another guy; then my date picked the other guy who lied about trust issues! And she picked him because "He didn't have a spider picture on his shirt" Bob: I know man, Stupid Girl Phase. Jason: Oh right, duh.
by Ashaxei September 22, 2009