B-Okay - It's good enough to keep you from getting grounded, but not

It's good enough to keep you from getting grounded, but not good enough to get a second helping of cake.

My report card was B-Okay. I didn't get a zero, but I didn't get a gold star either.

This app is B-Okay. It works, but it doesn't sing or dance.

My little sister's outfit was B-Okay. It wasn't fashion, but it wasn't a crime either.