1. (n) A slang term used to describe someone who messes up another person's combo in a game of 13.
2. (n) A slang term used to describe someone who is an overall jerk, or douchebag (see douchebag).
"While playing 13, De'Jan played a 2 of Hearts, and Ivo, being the Jew Bagel that he is, played a Breaker."
"'Dude, don't be a Jew Bagel and Jew me out of this deal,' said Alex as he tried to get a good deal from the car dealer."