Bestie Kat is a word you call a person named Katherine, you call them bestie Kat because overall they are a good friend, they may not answer your messages once and awhile but they are very polite, they like to say thank you and act like there the best.
by Caleb Cummins March 16, 2022
Get the BESTIE KATmug. 
An outburst of exuberance during group sex, often prior to the onset of orgasm, during which two of the parties involved in a BFF relationship slap hands above one another's heads in a traditional "high-5" gesture while simultaneously yelling "besties!"
by smledbetter June 26, 2010
Get the Bestie-5mug. by SJBiscuit November 25, 2020
Get the Bestiemug. by CutieGinaa March 19, 2019
Get the Bestiesmug. by tanalol June 24, 2021
Get the hey bestiemug. 1. the girl that talked to you for a couple days but forgets you a week later.
2. if somone calls you "bestie" they are seeking clout.
2. if somone calls you "bestie" they are seeking clout.
Oh, hey bestie. -ignores.
by highimvlady October 4, 2022
Get the bestiemug.