To have an orgasm so extreme you neigh like a horse.
My girlfriend rubbed, rode, and sucked me so much last night that I had a horsegasm.
by HeadShot223 June 13, 2010
1 more definition
A Horsegasm is when you have a really good orgasm.
Awww dude I just jerked it to some porn, and I had a total Horsegasm!
by 96zach96 June 05, 2011