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
Trisha: Oh my god are you ok??
Linda: (aghast) I think..I think I'm having a swayzegasm.
Trisha: *gasp* You are so lucky.