A to the K
The text you get from your girlfriend when she's mad and doesn't want to talk to you. It's like she just said, 'F*** you' but in text form.
My girl said 'K' after I cheated on her with her sister.
I asked her to the prom. She said 'K' and I knew I was dead.
She sent me a K after I called her mom ugly. That was the end of our relationship.