Bee's

Whose sting is more painful: a bee's or a wasp's?

Mary is fairly plain, but Tom thinks she's the bee's knees.

Bees have a barbed stinger that can be stuck in the victim of a sting, tearing the stinger loose from the bee's abdomen, which results in its death.

He thinks he is the bee's knees.

It's the bee's knees.

The bee's stinger is stuck in my hand.