1 definition by BigFanOfUD

An deliberate activity or action by a male that results in his failing to have sex.
"Dude, are you going to the Sorority Lingerie Party ?"
"No bro, I need to study."
"That's spermicidal, man !"
===
"I told Sheryl that I am still in love with my ex, and she dumped me..."
"Wow, that was spermicidal !"
by BigFanOfUD November 2, 2011
Get the spermicidal mug.