When you sit on your hand until it goes numb, then you proceed to masturbate so it feels like you are being jerked off by a ghost, or invisible spectral force.
by Long Tao October 18, 2007
The act of masturbation when a man wraps his white bed sheets around his penis and masturbates with it around said penis until ejaculation in which doesn't take the sheet off of the penis, then the man then falls asleep with the sperm and sheet making a mold of the man's penis looking like a ghost.
Bill: Hey Jim, I ghosturbated last night and my mold was 7 inches!
Jim: I did it too, but my mold was only 5.5 inches.
Jim: I did it too, but my mold was only 5.5 inches.
by SergeantBooty December 26, 2014
During Halloween you dress as ghost and get on all fours, you start masterbating while someone sticks a gourd in your ass.
by slap chop December 17, 2010