What is the difference between a jew and Santa? The direction inside the chimney
Why would you compare Jewish people with Santa Claus?
because jews are dirty folk who go into chimneys while the real Santa Claus only gives presents.
This type of joke, while I understand is completely just a joke and doesn't mean anything about you-- could make a lot of people believe that you hate Jewish people. When they believe that, they'll start to not want to associate with you anymore and believe you may even have Nazi beliefs which would be a horrible thing to be considered in this day and age.