wish like a fat girl
The desperate way of wishing for something that will not happen because the wisher does not have enough self-discipline.
Betty: Oh, Carlene! I really hope that Graham calls me! He's just so dreamy!
Carlene: Betty! Get real! He's from the good part of town. You truly wish like a fat girl!
Carlene: Betty! Get real! He's from the good part of town. You truly wish like a fat girl!