Acronym represents: "then my asshole dropped away". This is certainly a modified type of the phrase "and i discovered 20 dollars". ATMAFO can be used to revive any waning story. This can be produced by an actual condition where a weightlifting people's anal area fell out of his human body during a weightlifting competition (yes, google it). The word acronym version is reserved for household friendly social communications. This is certainly still funny. The lengthy variation is a lot more good at making the most from a boring story as you're watching appropriate audience.