Sick in the head 

A derogatory term used to describe people with a mental illness.

My granddaughter tried to kill herself; she is sick in the head.

Sick in the head by foxbow November 4, 2012

bups man in the head piece 

to smack one's head with one's palm

stop chatting breeze or i'll bups man in the head piece bruv

bups man in the head piece by bladman_z you get me November 20, 2009

shake of the head 

A slight shake of the head, meaning you screwed up so bad, that the other side can only shake their head. Or, other side is fed up with your shit.

Example 1:
Bob: DUDE! I ate a porcupine -- when it was still ALIVE!
Freddy: *Shake of the head*

Example 2:
Bob: Dude, I climbed Mt. Everest, pulled of my helmet, para-glided down, and landed on my head! And the only evidence I have is this small scratch on my elbow!
Freddy: *Shake of the head*

shake of the head by freddymcbob January 13, 2015

gunshot to the head 

A call that beats shotgun.

"Shotugun!"
"Gunshot to the head!"
"FUUUUCK"

gunshot to the head by Even125 June 5, 2016

Knock it on the head

To stop doing something.

Look Love Albatross, we've been going for four hours now. I've come seven times. Can't we just knock it on the head?

Knock it on the head by The_Strut October 21, 2004

hit the head 

It means to go to the bathroom to take a piss or to take a shit.

I'm gonna go hit the head. I should be back in about three minutes.

hit the head by SR Mamun April 2, 2021

like a nail in the head 

An analogy for obvious. This was originally coined by a pharmacy professor at the UT Health Science Center at San Antonio. The professor was referring to Phineas Gage, a 19th century railroad worker, who suffered a freak accident when an explosion catapulted a large piece of iron through his skull and into his frontal lobes. An injury that was anything but subtle.

Professor: "what's an antibiotic used for?"

Student Bob: "Uh, there is an inhibitory, Uh, upregulation and, Uh half life ..."

Professor: "An antibiotic kills bacteria. Bob, the answer was like a nail in the head and somehow you completely missed it"

like a nail in the head by MeDavebo October 7, 2008