Premature ejaculation of the penal stem. "Cumming" or "Came" before you wanted to.
Director: Alright let's just get this shot of you jacking off towards her face

Porno Actor: Oh man I already had a little precum

Director: That's alright.
by ZED CHANCE FUCKING RULES January 16, 2009
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An excuse given by many to explain an unintended pregnancy who don't want to admit that they forgot to pull out or take the pill.Everyone seems to know someone who supposedly had a precum baby,and it always seems to be someone they know remotely,i.e. a friend of a friend of their cousin's babysitter's sister.
Britney: "My sister's best friend's neighbor's cousin's wife's friend's half-sister had a precum baby."

Sarah: "You mean your sister's best friend's neighbor's cousin's wife's friend's half-sister's boyfriend didn't get it out in time."
by GrammarKnozzy March 27, 2013
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A baby who's success, intelligence, and achievements is limited because it originates from ejaculation that have not been fully developed yet.
"Joe couldn't graduate community college."

"Why?"
"BECAUSE he's a precum baby."
by Clyp May 25, 2015
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That watery shit that comes out before you squirt your mustard
I just shot so much mustard precum. It's gonna ruin my weiner
by Joeyfromtheblock March 11, 2015
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A man or woman who suck a great cock and love milking out the precum. They just keep sucking it till it's empty!
Jack is a big precum princess. He used to suck cock at the adult theater and save the precum he milked out and spit it into a little bottle. Then he'd use it for liube when he was jerking off!
by Prizzin gard May 29, 2017
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A tactical treat that cannot be beat, served in vials across the street.
“No! You can not sell tactical precum to kindergartners!
Why not?”
by Ember2047 March 10, 2021
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a lovechild born to a couple who used “pulling out” as a form of birth control.
I felt pretty good about my childhood until Mom and Dad sat me down and told me I’m actually a precum baby
by dropd4thewin July 24, 2021
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