It doesn't hurt at all!

We need to anesthetize before starting treatment. Please bring our specialist.

Yes, sir.

Nice to meet you. I'm the anesthesiologist of this hospital, Kennen.

Uh... doctor, what are you fiddling with?

*snap, snap*

Don't worry, it'll just sting a little thrice then it'll be over!

Mark of the storm's skill description (before nerf)