Asdixyation 

When someone chokes on a penis.

Jimmy: I was totally throat-fucking Sarah last night and she could barely breath.

Stewart: Aaah, a classic example of asdixyation.

Asdixyation by Alphonso Von Clockstein August 4, 2014

Asdixphyation 

Choking, gagging or simply not being able to breathe whilst performing fellatio.

OMG Janie, his dick was so big, I almost died by asdixphyation.

Asdixphyation by xto2000 October 6, 2011