A Pie Crust
A pie crust is when a girl wears pants so tight they look like they're about to explode. It's like she's trying to show off her butt and her thighs at the same time.
My pie crust looked like it was about to break.
I saw her pie crust and knew she had no self-control.
Her pie crust was so tight, I thought she was going to rip her pants.