to get pregnant; an unplanned pregnancy, unwanted.
fuck yo! i just knocked up this bitch, now i gotta pay child support!
by master p March 03, 2005
To get someone pregnant
Amanda got knocked up because Jimmy didn't use protection.
by startenhash October 21, 2003
To get a woman pregnant, perticually un-planned, un-wanted or in wedlock.
Ironicly, my radical femminest english teacher came in knocked up today.
by BigFishyBob March 25, 2007
to get someone pregnant, generally unplanned.
jack had sex with with me, unprotected and now i'm knocked up..
by smile.- November 25, 2008
To impregnate a lady..
"Lucy got knocked-up by Jeff.."
by Leeeeeeena September 07, 2005
1.When a man gets a women pregnant, usually not planned.
1st person:
Hey Jessica you look sad what wrong?
2 person: Well, I'm pregnant!
1st person: "oh shit girl you got knocked up."

by MariiJane April 24, 2009
"Knocked up" is slang for "Impregnating"

Though it is generally used negatively, in certain "ghetto" settings, it is a compliment to tell a girl her boyfriend knocked you up. No one is sure why, but many believe it is a compliment for implying that said boyfriend is attractive/sexually potent.
"You're flyboy got me knocked up/impregnated me"
"Thanks, girl! He is a looker!"
by mj tragic February 06, 2014

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