When having intercourse, putting a white sheet over your entire body, including your head, with a whole cut out for your genitals.
I tried to give her The Friendly Ghost last night, but she got really creeped out and left.
by CasperTheFriendlyGhost1 March 27, 2009
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A "friendly ghost" is when you hide your buddy in the closet, so that later that night when your girlfriend comes over and your fucking her doggy style on the bed you pull out and your friend hopp's in there! Now when he gets in there you walk to the side of the bed and take a picture with the flash on so she can see it, see you, and realize your not the one fucking her!
"Bro she was so surprised when she saw me last night, BEST FRIENDLY GHOST EVER!!
by TheFreshPrince6969 January 24, 2017
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something that is unseen, unheard, unfelt, or you do not care about
"That guy just flipped you off"

"ah who cares, it's casper the friendly ghost to me"
by Dick33 June 18, 2008
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When you have sex in the dark with a girl that thinks you're a different person but you aren't aware she mistook you until after the deed is done.
"How'd you lose your virginity?"
"Oh, I pulled a Casper The Friendly Ghost, once I realized she mistook me for someone else I got the hell out of there!"
by ssjlayne May 5, 2022
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pasty ranga that has only played 4 games in his entire life. WE CAUGHT U IN UR LIES!! no clearances for u xx
casper the friendly ghost isn't that friendly but aitac will forever love him.
by buzzy cat September 12, 2022
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