Kbf 

Kinky bum fuck

Girl: “let’s kbf!”
Boy: “okay let do it”

Kbf by Anonbitchx June 17, 2018

KBFI 

The ICAO airport code for "Boeing Field/King County International"

City: Seattle
State: Washington
Country: USA

KBFI by +ICAO+ June 5, 2004

kbff 

kinky best friends forever; someone you meet in the BDSM community and become fast friends with; not to be confused with a love/lust interest (although nothing should ever be entirely ruled out . . . .)

"I met someone at that dungeon party last night, and it feels like we've known each other forever! She's my new KBFF!"

kbff by SweetPirate September 9, 2013

KBFY 

Kaitlyn be flaccid yo

“You know, KBFY for real.”

KBFY by Dudefellasz August 7, 2022