Sperm Killers 

Very tight, compressing pants that deplete your seamen count.

"Dude, that guy had some major sperm killers on at H&M"

Sperm Killers by iceteaIceedout September 7, 2014

sperm killers 

pants that are worn by males that are too hot are too tight; usually refered in the first person

"man I should not have worn these sperm killers to the golf course today."

sperm killers by peeroni May 11, 2008

killer sperm 

Killer sperm is the sperm that comes out at the start and end of an ejaculation. It's purpose is to kill other mens sperm that could still be inside the pussy.

My killer sperm was specially trained in testie camp to fuck up other sperms.

killer sperm by wormzz August 12, 2009