What do Jews and Tires have in common? They both Screech when you hit the gas
Ouch. That's a dark joke right there.
It's a joke because they are not humans... Just kidding, I know they are not animals also.
Believing that jewish people are not human simply because of their religion is wrong. Also, making a joke in reference to the holocaust is pretty messed up as well. The holocaust was maybe the worst genocide in our era, so to make light of that event is pretty disrespectful.