A more respectful way of saying 'k' because it is capitalized
Girl: Hey, I'm breaking up with you. I haven't like you for months and I'm sorry to end our 5 year relationship like this.
Boy: K
when someone says this word they expect you to respond asking what upbruh is
Friend 1: That table is so upbruh
Friend 2: What's upbruh?
Friend 1: Nothing much, hbu