Joan Rivers tells TMZ ... she doesn't believe Anthony Weiner is fit to hold public office ... 'cause he's a total "piece of garbage."
Joan was in NY yesterday -- and wished us a happy Rosh Hashanah -- when the topic turned to the most famous Jew vs. Jew battle since Cain and Abel ... Anthony Weiner vs. The Jewish guy in the deli.
"[Weiner] was like, 'Don't judge me!'" Joan said ... adding, "No, we don't, we just judge your penis."
There's a pretty good "pulling out" joke in the clip too. Check it out.
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