okay so not much to go off of here but i remember seeing a scene in a movie my parents were watching where a guy basically freaks out when he sees a sprinkler running. i think he even snatched up the girl who was near it or at least pushed her away from it. the reasoning was a flashback where blood was being washed off by the sprinkler. sorry for the little amount i could tell you but thank you to those who can figure it out