Suffococking 

Suffocating from a cock from either of the following: deepthroat/gagging, face fucking, or throat fucking.

"Becky, I'm telling you, Trevors dick was so big, I was literally suffococking on it."

Suffococking by Alex Niezgoda March 27, 2015

Suffacocking 

To suffocate someone else by shoving your penis down their throat.

"Get your dick out of my throat! Your suffacocking me!"

Girl 1: "Hey you look blue what's up?"
Girl 2: "My boyfriend suffacocked me"

Suffacocking by AlexTheSuffacocker November 16, 2013