BK 

bk stands for a buzkill or someone or something that kills the fun. BK's are usually found making awkward interjections in a conversation that makes everyone in it want to leave.

kevin-"dude last nights party was so funny"

BK Yona-" oh yeah totally man, thanks for inviting me, god i have no friends"

kevin-".... what a BK!!!!!"

BK by Da bitch takumi November 8, 2011

bk 

Boner Killer. A person, image or situation that kills your boner

dude, that ugly chick was a total BK
learning that i had 4 exams that day was a wicked BK

bk by the manmeister July 19, 2007

bk 

it means British Knight, brand wearing by Crips and that got for initial BK like Blood Killa

bk by BusyBoy April 21, 2003

BK 

Bad Kid, a bad kid is someone who isnt good at there respective postion(s) in life. such as xbox or athletics

Wow these kids are BK's. Hey man your such a BK just give up.

BK by Hasselhoffman February 15, 2009

BK 

A noob or novice that has no skill in the said game. (Bad-kid)

That kid doesent even know how to play! what a BK!

BK by Scott P, Jake L February 20, 2009

bk 

it stands for burger king.

i went to bk and got my grub on.

bk by instant_retard February 7, 2005

bk 

Buzz-Kill - Sometimes a thing but most often a person that kills your ecstasy buzz in 1986. Any Debbie Downer during times of inebriation.

It was a real bk when Laura showed up, she's so fucking needy and all the coke was already gone.

bk by Kdub83 May 23, 2014