The sensation of sexual climax resulting from autoerotic stimulation of the genitals (i.e. masturbation) with a numb hand. The feeling is as if one were to have sex with a ghost rather than themselves; a very popular euphemism for ghost is Swayze, ergo: Swayzegasm
Self-abuser: (coming to climax) Whhhhoooooaaaa. Damn. (gasping for air) That felt good. My hand was numb as shit; I fucked the ghost. I had a Swayzegasm. Now, back to the pottery wheel.