Your bestfriend's husband/wife or girlfriend/boyfriend. So if your bestfriend is cheating then you have 2. Also if your bestfriend has a celebrity crush and says they are married that's also your bestfriend in law.
by YNW Melly's Bestfriend in law January 13, 2020
for most people that are fatherless, a best friends dad is the closest male to them. resembling your own father, but 100x better.
by thegreatestbrunomars March 27, 2022
by CTdefinitions September 12, 2020
On this week you may follow your Bestie to any of their classes. No question asked and you can use this as an excuse with it too.
"Hey I don't have you in my class?" - "Oh that's because through May 3-7 Follow Your bestfriend to class week!"
by Lol_Thut April 28, 2021
Your bestfriend is someone who is there when you need them. They can always put a smile on your face too! Even though they may get on your nerves often, you still love them with all your heart and you know it! They take care of you and help you out, even though they will laugh first. They cry with you and laugh with you, they are trustworthy and never break a promise. They also always put you first over their boyfriend. But don't forget, she can be a cunt sometimes.
by Your hot October 27, 2021
Duke: hey charlotte it is National suck and grab your bestfriends dick can you do that for me?
Charlotte: Sure duke! :) see you saturday
Charlotte: Sure duke! :) see you saturday
by daddys daughter June 27, 2020
April 22 is Spam Your Bestfriend Day. Whether its on social media, or constant calling, spam your best friend and annoy the crap out of them.
by honeydy April 18, 2022