Someone who does things your boyfriend or girlfriend would do for you when you do not have a significant other.
by YM23 January 20, 2016
There is a stupid trend of girl and guys kissing there best friend and that can seriously ruin a friendship.
by chocolatecakexx July 07, 2020
national expose your best friend day is when u get all you crazy, embarrassing, cute and silly pictures of your best friend (national best friend day is november 1st)
“ national expose your best friend day is when u get all you crazy, embarrassing, cute and silly pictures of your best friend”
by lala thanarse October 14, 2019
Hey it's Hug your girl/boy best friend
by Loving the broskis November 15, 2019
On June 23th you have permission to fuck any of your best friends weather they be male, female, non binary, trans female or trans male, ECT.
You can go up to your best friends and say "its national fuck your best friend day" and they have to let you smash and the same goes to you.
by Femmeep420 June 21, 2021
John: Hey best friend
Ashley: Hey whats up?
John: Its National Fuck your Best friend day
Ashley: Ok lets do it
Ashley: Hey whats up?
John: Its National Fuck your Best friend day
Ashley: Ok lets do it
by PRINCEMEL10234 June 08, 2021
Slap your tallest best friend day is October 22nd, slap your shortest best friend day is February 12th, so slap your average best friend day is September 25th
Average friend: why did you slap me??
Other friend: It's national Slap your average best friend day
Average friend: oh ok
Other friend: It's national Slap your average best friend day
Average friend: oh ok
by Egibadif September 24, 2021