As much as we would love to pretend all our favorite celebs are besties in real life, the cold hard truth is that sometimes co-workers hate each other. Harrison Ford, Robert Downey Jr. and Nicki Minaj all had harsh things to say about their former costars — and they did not hold back!
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Click through the gallery to see which celebs exchanged the meanest insults with their costars.
The two starred in Indiana Jones and the Kingdom of the Crystal Skull together.