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1 definition by
DoubleB.
BFS
It means
Best Friends
Sister
. Commonly used when one is in love with best friend
sister
.
"Bro
I like your sister
."
"So
you're in
love with your BFS?!?"
"Yes,
yes I am
."
by
DoubleB.
May 2, 2021
Flag
Get the
BFS
mug.