Flufferkncukle is a made-up word from the kids book, "Pottymouth And Stoopid". Pottymouth made the word and he uses it as a replacement for the "f-word".

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)