When you’re watching others have intercourse while draped in a white sheet with the eye holes cut out to appear as a friendly ghost to those having the intercourse.
I refused the Devil’s 3some but I did let him Casper in the corner.
by Travelingfilthcircus November 7, 2020
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When a guy is giving it to a girl from behind and he substitutes his friend in right when he's about to cum. He runs outside and waves at her through a window. She is left wondering who the hell is fucking her now.
1) Dude, I did a casper to my girl last night. Maybe that's why she won't talk to me..
by BrainWave. May 9, 2009
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Casper is a rare name meaning sexy, muscular, hot. Casper is a great musician and great in bed.

If you get into a relationship with Casper you will not be disappointed.
"Damm Casper, your to sexy and muscular!"
by Mikael December 15, 2016
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The act of removing a fitted sheet from a bed and placing it over ones head as to transform into a ghost. Then perform the deed of intercourse with a confused partner while maintaining a ghost-like demeanor.
“So you picked up last night, did you Casper her bro?”
“Yeah it was great man, she was so confused when I pulled all the sheets off her bed”
“Caspering is always a good time”
by FreshPrince_321 June 3, 2014
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Casper is Typically a boys name. Casper's Are the most resourceful people around. They are excellent gamers and are amazing with coding, computers and robotics. Some Casper's are A-romantic and A-sexual.
Casper is amazing
by Invincible Nightmare November 5, 2017
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The best guy ever and I love him so much and he’s the best boyfriend ever. CASPER I LOVE YOU SO MUCH
I love you Casper
by Marsthegayplanet December 29, 2022
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(v.) The act of mutually ghosting, also known as friendly ghosting. When both parties do not call or text one another after a date, hang out or hookup.
After we hung out last week, we both caspered. It's for the best.

He was a really nice guy, but something just didn't click and after we just caspered each other.

He told me he 50% supported Trump, so obviously not for me. Thankfully we caspered.
by dn0090 September 3, 2019
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