Top Definition
1 a male who forces a girl to spit out his cum

or 2 a male who jackes it so often that he kills sperm like a homocidal maniac killes people
"wow your a spermicidal maniac i'm a vegitarian and need the protine so i should swallow"
by tttrucker4 May 30, 2005
1 more definition
one who masturbates constantly. every hour on the hour, or something to that degree of frequency.
dude, ted is a spermicidal maniac. i swear he dissapears at least 6 times a day to "clean his room"
by Mike Q. October 12, 2004

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