When you have the urgent need to defecate and you head for the nearest building to find a restroom but when you attempt to enter you find that the doors are locked. At this point you have approximately 3 seconds until fecal explosion, so your survival instincts kick in and you run to the nearest unexposed wall and blast a big shit all over that mother fucker.

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)