Facebounce
When some schmuck texts you on Facebook but you're too lazy to reply so you log off and make them think you're deaf and dumb
My mom messaged me at 2 a. m. I turned off chat and pretended I had no fingers.
My crush sent me a message. I logged off like I was being chased by a bear.
My teacher asked me to answer a question. I turned off chat and told my dog to bite her.