For every celeb that's able to put on a happy face on demand, there are an equal amount of grumpy celebrities who are known for always being tremendously unpleasant (here's looking at you Tom Hardy).
But out there in celeb land, there are a whole host of people with hidden dark sides who have zero time for you or for any of your nonsense. Here we present ten of them that you would never imagine having a particularly bad day but got caught in the act.
Celebrities, they're just like us...