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Popular abbreviation in Japanese to the vtuber Shirakami Fubuki, who is part of the hololive group, and gained popularity in the west due to videos of her singing old songs, that have turned into memes.
A: Have you seen the new video by FBK?
B: OMG! It's so cute!
FBK by Tudi20 April 17, 2020
Related Words
(Fat B**ches K) a term used to insult rude fat people
that fat girl just hit me!! FBK!!!
FBK by bora k October 28, 2021
Fat Bitches K

To show hate towards fat bitches and/or disliking towards them.
John: This fat bitch tried to get into my party.
Me: Hell nah FBK
FBK by Some631guy February 2, 2022
"(864): She announced her abortion via fbk" - textsfromlastnight.com
fbk by tfln_lover July 15, 2009
phrase : “fbk”
nahhh son she was trynna argue w me bc my friend said her friend was a leg 😂 .. FAT BITCHES K
FBK by sexycowgirlll March 23, 2022
FAT bitches K, slang from nyc and k means not valid. For example if a fat girl try to hit on me I could say “FBK” Meaning fat bitches K.
Damn bro you see her she bad?” “Nah bro FBK.”
FBK by Baba treesh a February 1, 2023