A dance moveinspired by Mortal Kombat in which, while grinding, the partner in front drops it low and proceeds to slap the floor with open palms. Said partner is then free to slowly rise, with their hands remaining on the floor as long as possible.
“Oh, you’re the girls we were dancing with when I threw down a Fatality.”
“Yeah, we didn’t know guys pulled moves like that.”
Death by masturbation. Basically, fapping so hard you die. Most common in older men with erectile disfunction, who have a hard time getting, and keeping, it up, making them have to jerk harder, thus increasing the heartbeat, often resulting in a heart attack. Faptality, in a broader sense, can refer to ANY fap-related mishap, such as autoerotic asphyxiation gone wrong.
Tim: "Hey did you hear what happened to Blake? He was watching Japanese porn, and nutted so hard, his balls exploded and he had a heart attack!!!"
Nelson: " Wow, not THAT is a faptality!!!"