When one is aggravated by a female counterpart, for example a girlfriend, and decides to, "Fucking knock the bitch out," thus enacting "Plan B"
"Man you know what you gotta do... Plan b man..."
"Yeah... you gotta fuckin KNOCK THE BITCH OUT!"
by troy619 February 27, 2008
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The underwear at the bottom of your drawer that has long ago stopped fitting and is occasionally used when on menstrual cylcle, but will be used when all other panties are dirty. Honestly most people dont know why they even own them, but never thrown away.
The reason why im wearing granny panties today is because I had to resort to my plan B underwear.

by Bekahboo February 19, 2007
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The greatest pill that has ever looked lived. If your condom breaks or if you don't believe in condoms, no worries! Just pop one of these pills in your girl and fuck away with no regrets!
Oh shit, the condom broke! Good thing I bought that plan b pill though.
by Hol-ee Fukman August 14, 2017
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The intentional sabotage of a condom by a woman in order to get pregnant. Often considered a last ditch effort to bag the man.
He wouldn't give her a wedding ring, but instead he gave her a plan b baby. Now there is a shotgun wedding in the making
by FancyMotherFucker November 15, 2009
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the chronic or smokin the chronic
got any plan b?
or
i was hittin plan b tough last night
by big bad master May 10, 2005
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A plan be weekend is when you throw all caution to the wind and take your girl to creampie city all weekend, only to deal with it Monday by taking Plan B emergency contraception.
Them: How was your weekend?
Me: Excellent, creampied my old lady 6 times and went to the pharmacy this morning for the morning after pill.
Them: Ah, the plan b weekend
by pee80 July 16, 2018
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Giving money to one's sexual partner for possibly an abortion after knocking up one's sexual partner.
by Tryna keep it 100 August 30, 2016
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