September 10th is national beat your boy bsf day, this is a day where its ok to abuse your male friends.
Boy- why tf do you keep hitting me?
Girl- because it’s National abuse your boy bsf day!
by Tuna is disgusting September 7, 2022
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A blanket bsf is a MF that you could cuddle with because their blankets smell like piss juice. A blanket bsf could also be someone who u talk so much shit about but the “blanket” is covering all of the sneaky secrets...
A blanket bsf could be someone who you want to finger you under a blanket 😩🤚🏽.
Bsf 1: ou bsf your blanket smells like piss . Lets cuddle
Bsf2: yeah.. now I am your blanket bsf,

Bsf: finger me under the blankets. 🖖
Bsf2: okay.. I’ll become ur blanket bsf.
by stankasf February 10, 2021
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Referring to Rogans Best Friend, particularly a freshmen that doesn’t like to take the blame for being Rogans sidekick. A fiend that likes to get pushed into lockers. (Rohan-Junior) ( fiendy freshmen)
Example: “Fiend(no name mentioned) why do you blame a junior(no name mentioned) for being Rogans BSF(best friend)
by PandaBoxer000_[ December 12, 2022
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You have to become bsf with one person
Go up and ask to be there bsf happy national bsf day
by Bsf4ever September 24, 2019
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“Are you busy on the 6?”
“Yeah”
“Doing what?”

“Celebrating national Bsf day , with your no having Bestfriend ass”
by freak man yeah thats me. November 1, 2021
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Private story of your bsfs and how close y’all are post pictures/edits etc.
Bsf goalshow close y’all are and how munch you love them
by Lulbaby223 March 15, 2020
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On the 17th on June is embarrass you bsf day where you get to post or expose cute or funny photos of them
by zazaisswag June 17, 2022
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