Rock Paper Scissors

[A reporter with microphone is interviewing a meteorologist, who is standing next to a futuristic machine]
Meteorologist: Our new weather radar uses time travel to see one day into the future
Reporter: That's amazing!
[The meteorologist grabs a printout from the machine]
Meteorologist: Here we go, there's going to be a storm tomorrow
Reporter: Well, guess I'd better put out my umbrella
[The meteorologist is reading the printout]
Meteorologist: No, you won't have to