The act of posting stuff at Facebook, Twitter, Instagram and co. while not answering to your texts or messages. Often happens on purpose by the person you are awaiting the answer from.
Person A: "Damn, my GF is not answering to my texts"
Person B: "Oh hey look at this, she just posted a photo of her cat on Instagram!"
Person A: "WTF why isn't she answering me?!"
Person B: "Looks like you just got pbna'd!"