Its where you get a heap of pedestal fans set up around you and you jack off into the fans so that it sprays all over you and you become Casper.

The option to have additional semen pored into the fans is also acceptable.
For instance you are in a warehouse and you set up a circle of fans for a Casper's Showdown
by Symthisis February 14, 2014
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After sexual intercourse wait for partner to leave the room. Once they have left the room wipe your arse on the bed sheet put it over your head and run around as a ghost.
I went to her house last night , afterwards I did a Dirty Casper
by Sgtspice July 8, 2017
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When one manages to cum with a flaccid penis
Dave: "how was the date?"
Jack: "horrible. She gave me a flaccid Casper."
by SilverBackJames23 July 14, 2013
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The Casper index is the law of logarithmic scale to determine how white someone is.
Wow that kid is so white he looks like Casper the ghost he must be a 10 on the Casper index
by EnglishPlague May 5, 2021
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When avoiding someone in a friendly way.
After having relations with some; remain friendly when you see them, but trying to avoid them at all cost
After we selpt together she busted a casper on me.
Just bone her and then bust a casper.
by oldriverschoolroad August 4, 2007
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when your fornicating with a woman at your parents house and shes being too loud so you put a pillow over her face but then you decide to start punching the pillow...her muffled cries sound like "ooooh" as the pillow turns red.
man i totally gave my girlfriend a bloody casper last night...oooooh
by big booty jewdys rudy March 8, 2011
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A poo that when you wipe your arse there is nothing on the toilet paper
“Omg dude I did a Casper poo earlier how insane”
by Jane36 October 20, 2019
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