faceplamm - A faceplamm is when you hit your face with your hand because

A faceplamm is when you hit your face with your hand because you just did something so dumb it makes your brain want to leave your body.

I told my crush I was dating my best friend. I faceplammed and cried.

I drank all my soda at once. I faceplammed and threw up.

I wore my shoes on my hands. I faceplammed and laughed.