BK

a major league pitcher from Korea who's right handed.
now he's in Boston Red Sox
it also stands for
Bonds killer (Bonds is hitless against Kim)
Bambino killer
Bronx Killer
Bone to be K (He strikes alot)

Hey there goes BK!!
He stikes out Bonds yesterday.

by robin December 1, 2003

BK

Boner Killer

A man or woman who has turned your fully erect penis flaccid

I was gonna have sex with that girl until I saw her misshapen booty, it was such a BK!

by thachingster August 17, 2010

BK

A bad child (aka Bad Kid) that teenagers use when they are too lazy to spell out the word especially when they own their own tablet computers and are typing all the time; also known as BA; anyone who plays games or emails when they should be doing work.

SB is a was such a BK because she emails during class.

by Bobbin99 March 29, 2009

BK

Methylone, bk-mdma- "molly", any other cathinone someone tries too pass off as something else.

A term

"Hey, jimmy i got some Molly".
"Jimmy puts on Reagent is really cathinones"

"hey wanna buy some BK" Is really 4-MEC.

by fubarpdx January 2, 2014

bks

Blood Killa Set. Refers to bk which means blood killer, which is used by crip gangs.

person a: You crip?
person b: yeah man
person a: bks?
person b: (says their set

by YukkyTung April 26, 2006

BK

Bad Kid; mostly used on xbox live, meaning you lack skill, are a noob, or use gey or cheap ways to get the Win

Siinz: That was a Bk move, you shouldn't have rushed n0ob...

Godz skill: haha BAD KID... get raped

by Xbox Expert February 15, 2009

BK

1. a fuggin legend
2. cant score a goal or with a chick to save his life
3. son of Wayne
4. sterility
5. wanna-be pimpsta
6. future murderer of Jarson

1. BK is the man.
2. I dont wanna be like BK.

by J.R. December 10, 2003