bestest 

the best of the best
Better than best

The bestest food is pizza.

bestest by allie October 6, 2003

Bitch Besties 

Bitch besties

The type of besties you can bitch to about anything, also because they are kind of a bitch also

Me and my best friend are bitch besties

Bitch Besties by Bestieessss May 17, 2017

National besties day 

November 15 is a day to appreciate all your bestest friends. And spend quality time with them.

I’m so glad we became friends, you are amazing to me and always find a way to make me smile. Happy national besties day!!

National besties day by Yourrr queeeen November 13, 2019

BESTEST 

when someone is better than the absolute BEST. he's the fucking bestest!!!

isabelle: Damnnnnn isaac is the bestest!!!

BESTEST by isa, the best April 18, 2019

bestest 

The super-superlative form of the word good.
singular: good
comparative: better
superlative: best
super-superlative: bestest

You're my bestest friend

bestest by Qazwsxedcrfvtgbyhnujmikolp September 5, 2005

Bestest friend 

Kind of like your best friend, except better. The superlative form of the term best friend. Opposite to worstest.

Dylan and Autumn are bestest friends.

Kim is Lea's bestest friend.

Ron wants to be a bestest friend.

Bestest friend by autie =) May 6, 2009