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1.
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.
by Scott219 July 28, 2006
 
2.
a series of involuntary contractions of the muscles of the genitals, usually accompanied by the ejaculation of semen (male) due to hightened sexual excitement caused by the presence, thought, or image of Patrick Swayze.
Patrick Swayze apears on TV
(Linda moans)
Trisha: Oh my god are you ok??
Linda: (aghast) I think..I think I'm having a swayzegasm.
Trisha: *gasp* You are so lucky.
by AGA March 23, 2006