Bad things happen to people for no particular reason. Shit Happens. Did you know that the 1994 film Forrest Gump, contains a fictional account of an event involving Forrest Gump which allegedly led to the birth of the phrase. When he was running across the country, a bumper sticker designer asked him about whatever Gump wanted to say so he could put it on a bumper sticker and sell it; at the time, Forrest stepped on dog excrement, as the other guy said to him “Whoa! Man, you just ran through a big pile of dogshit!”, then Gump said “It happens”, the guy replied, “What, shit?”, Gump replied “Sometimes”; and the slang was created.