Perhaps expand headbanging to include not only the heavy metal motion, but the literal "banging one's head against [object]"? I wouldn't really consider this a "headbutt"

/headdesk

PARTY HARD etc.

Strangely this pic describes my overall day.

head trauma

I didn't like Kuroko much at first.

Then I saw the latest episode. Her similar /headdesk reactions to Mikoto in the cafe are fucking hilarious.

Best headdesk ever.

We don't actually have a headdesk tag? Surprising.

I've been looking for this gif since forever. :D