K-Bombed
When someone texts you and you reply with a single 'K' like they're a dumbass who doesn't know how texting works. It's like they just said 'whatever' and then left you hanging.
Bro, I just told you my entire life story and you reply with 'K'? What's next, 'OK'?
I explained the whole plot of the movie and you said 'K'? I'm not even mad, I'm confused.
I texted you about my failed relationship and you said 'K'? You're the worst.