BFSK

Abbreviation used on the internet and when texting.
It stands for Best Friends Since Kindergarten.

Going to see Dear John tonight with my BFSK!

by Dawn Leigh February 05, 2010

BFSK

An annoying abbrieviation for “Best Friends Since Kindergarten” that only annoying, white girls use on social media excessively to encourage questions about it for attention.

Annoying white girl: Omg my BFSK is coming over! She’s my BFSK and we are going to do BFSK things together because we are BFSKs.

Everyone else: shut the fuck up.

by CloverHD May 30, 2018