A young Jewish man excitedly tells his mother he's fallen in love and that
he is going to get  married. He says, "Just for fun, Ma, I'm going to bring
 over 3 women and you try and guess which one I'm going to marry." The
mother agrees.

The next day, he  brings three beautiful women into the house and sits them
down on the couch and they chat for a while. He then says, "Okay, Ma, guess
which one I'm going to marry."

She  immediately replies, "The one on the right."

"That's  amazing, Ma. You're right. How did you know?

The Jewish mother replies, "I don't like her."