Tennis players are of a different species. We are perfectionists who believe we are great tennis players; heck, you have to believe that in order to play against the others who try to take you down.
We are hard-headed for sure, so when a higher power calls down to us and says that we are wrong, or something of that nature, it is easy to respond with an "are you serious?".
These videos are some of my favorite clips of players taking their frustration out on the umpires. Some are unforgettable and probably wish they could be forgotten by the umpires and lines people.