Top definition
The act of achieving orgasm and/or genital secretion via ones thought process with no physical aide whatsoever.
"I had this raging hard on last night and all I could think about was Tyler Perry dressed up as Madea. Unfortunately I was too drunk to masturbate before I fell asleep. Shortly thereafter I was fairly certain I woke up pissing my pants. Once I came to, thankfully, I had realized I was only brainjacking." - Michael Richards

Albert: (sees Mikey making a face) Is he taking a dump?
Mollie: No, he's thinking real hard! - Look Who's Talking (1989)
by Mr. DouchΓ©bag November 27, 2009
Get the mug
Get a Brainjacking mug for your dog Callisto.
Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
Get the mug
Get a Leave Britney Alone mug for your Facebook friend Beatrix.