Amanda got knocked up because Jimmy didn't use protection.
by startenhash October 22, 2003
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Man, I really should've used a condom with her... I knocked her up!
by Brown Sugar March 21, 2003
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when a guy gets you pregnant by accident , whoopsies
felisha: man i’m feeling so sick today kylie

kylie: omg babe are you knocked up???
felisha: oh SHIT !

*dramatic head turn*
by titleofyoursextape June 17, 2019
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"Lucy got knocked-up by Jeff.."
by Leeeeeeena September 8, 2005
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1.(North America) V. To get Pregnant
2.(Great Britain) V. To wake up
"Billy go and knock up your sleppy head brother."
by GMan January 4, 2004
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to get a girl pregnant out of marriage(to get pregnant)
It is bad to get knocked up, you know that baby is gonna be messed up.
by katiecutie153 December 26, 2005
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