How do you say "Please put me out of my misery" in Spanish?

So now that I've put some what of a dent in my World Civ homework it's time to work on the vast amount of Spanish I have to do.
Which is going to be the real kicker because I really hate this class more then all my other classes. It has really been the true source of what has burned me out.
And this video sums up exactly how I feel about it...