Used to describe events or happenings which are amazing or leave you speechless. z0mgwtfbbqsauce would literally spell out to: zoh-my-god what the fuck barbeque sauce. I am unsure of the origins of "bbq sauce" however I believe they add comic drama to the phrase.

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)