1 definition by PulpDictionAri

To have sex with a man in order to get pregnant

To steal a man's sperm and insert it into your vagina
Can you believe Rashida? She spermnapped that guy at the bar last month and now she's pregnant!

She really wants a baby, so she's gonna spermnap the next guy she sleeps with.
by PulpDictionAri June 11, 2011
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