literally, knock-out basoomas; breasts that are so huge you might want to watch it when you are around a girl who has them because they could knock you out.
Careful if she turns around too fast, she's got a serious pair of kob's.
by Mallorey April 21, 2005
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stands for kevin o' brien... hottest teacher in the history of the world
student a: did you see KOB today??

student b: he bent over to pick up a piece of chalk in class and it was orgasmic!
by soooo hottttt!!!!! February 27, 2005
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to have anal sex with a girl, ala Kobe Bryant.
Last night was ok, until I got her in the kob!
by hulaj November 20, 2003
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Stands for King Of Bellends

Basically one who tries to piss you off and act a arsehole in front of you to embarrass you.
Player 1:just because you shat your load last night in front of me!

Player 2:fuck you, you pancakeface get a life and stop being a KOB.
by ---BLEWERT((()))))--- October 17, 2006
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KING OF BONGS; someone who is the king of all bongs, and can smoke them for hours at a time....aka Nicky Bong
stoner 1: did you guys see the KOB last night?

stoner 2: yeah he was rippin up a storm on them bongs.
by KOW #1 May 14, 2007
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klowns of beechboro
keg of beer

nice kob work on your car
kob in full effect
broken down again? who worked on your car KOB?
by dixie normous April 27, 2003
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the act of deleting an ex or person you don't like from your phone, bbm, email, facebook, myspace, or twitter. You won't feel tempted to be in contact with them
Seriously I need to get over my ex. I think I'm just going to do the kob so I won't be tempted to talk to them.
by freshflya12 February 02, 2011
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