As sport slurs go I have a hard time seeing how asking if your mama eats bagels crosses the line into anti-Semitism. Or does it?
Of course, I had to look up what squash was. I thought it was something you ate. Instead it is like racquet ball, but with a bigger racket.
http://www.thecrimson.com/article/2009/12/8/bagels-fans-dartmouth-squash