This Internet Slang page is designed to explain what the meaning of AFK is. The slang word / acronym / abbreviation AFK means . Internet Slang. A list of. I have heard my friend talk about being AFK on a Minecraft server, but AFK is an acronym for "away from keyboard". It's commonly used in. 03 Aug AM. at freaking kitchen i like that one alot better most of the time i go afk is because i have to go to the kitchen but really it.