spermatogeddon 

to die due to one too many loads while partaking in the act of bukkake.

Spermatogeddon was the perfect name for the first ever porn snuff film.

spermatogeddon by tellitizaman September 16, 2010

spermageddon 

N. A state of post-coital exhaustion caused by excessive ejaculation such that sperm count temporarily drops to zero.

After the fifth round Teemu groaned, rolled over, and sank into sweet, cuddle-free sleep. The countdown to spermageddon began.

spermageddon by Nicnoc November 25, 2010