casper 

<verb> To force sexual intercourse on an unconscious person without said person's consent. (A reference to an infamous scene involving Chloe Sevigny <Jennie> and Justin Pierce <Casper> from the 1995 motion picture "Kids".)

"Dude, you straight caspered her last night? That's pretty wrong..."

casper by Ricky Ross III April 21, 2008

casper 

The act of cutting holes in a white sheet, covering a chick with it, and then preceding to fuck her through the various holes. Typically done to ugly and/or fat chicks in order to not have to see them while fucking.

The chick was so fat and ugly that I brought home from the bar last night, I had to casper her.

casper by Tiff O July 26, 2016

casper 

a young person who is mostly salty due to there name being casper.

casper stop being salty please

casper by monic420 February 3, 2018

Casper 

usually a young woman that loves the cock and is doomed to Sit upon satins Lap for all of Eternity, sometimes known as "satan's Helper"

Fred: man, she's a Casper
Gary: Really!?
Fred: Oh yes
Gary: Sweet! see you in a while

Casper by Burdlight July 3, 2007

Casper 

The phenomenom that occurs when you post an article, and it never appears on the posted server, but appears on any other news server. Most posts of this kind will never appear. Those that do appear eventually are more based on horrible propogation.

Out of 5,000 articles posted to Usenet, Casper ate twenty of them.

Casper by speech1355 September 23, 2005

Casper 

cool, chill, awesome, sick nasty

"What? you fucked her? Thats mad Casper"

"I am so casper i am the solution to global warming"

"damn son, he mad casper"

Casper by Eddyson November 5, 2008

Casper 

When you go to sleep caused by extreme friendliness from Casper the Friendly Ghost

Guys I am tired. Time to go Casper!

Casper by fellaswag June 3, 2013