Top Definition
While sitting in bed, one pull's their bed sheets up over their head to resemble a ghost, and masturbates underneath.

Can also be done with a flash light underneath the sheets to create the glowing ghost fap. The flash light illuminates the sheet creating a magnificent aural glow.
I scared the hell out of my mom last night, she walked in my room and thought she saw a ghost, turns out she only caught me mid ghost fap.
by Benny Peme* March 30, 2011
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