brain duster 

A strike with the hand, usually the palm, against the back of someone's head. It is used to get the attention of the victim, especially for disciplinary purposes.
When properly executed, a brain duster causes no damage and little to no lasting pain, but does immediately capture the target's attention.

The boy was throwing a tantrum in the middle of the grocery store, so his mother gave him a brain duster and told him to behave.

brain duster by katboh October 12, 2005

brain duster 

(noun) Canned air used primaily to clear your keyboard from dust. Used as an inhalant it is known as Brain Duster. User will experience a feeling of blacking out. Use over a long time in a single sitting user WILL hallucinate.

Joe "man i'm all out of beer"
Moe "it's okay man, i've got some Brain Duster"

brain duster by BoJiggles September 4, 2006

brainbuster 

the opponent is set up for the suplex but is reversed and is slammed underneath the attacker's arm, crushing the head/upper back

brainbuster hit! ouch

brainbuster by tony December 29, 2003