by Dawn Leigh February 05, 2010
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.
Everyone else: shut the fuck up.
by CloverHD April 24, 2018