Roughly equivalent are the names Joe Blow, Joe Six-pack, and the nowadays rather less popular Joe Doakes and Joe Shmoe, the last of which implies a lower-class citizen (from the Yiddish שמאָ schmo: simpleton, or possibly Hebrew שמו sh'mo: (what's)-his-name). On a higher plane, the Talmudic generic place-marker name Plony (which can be translated to Mr. X. or Anonymous) is used as a reference in any case which is applicable to anyone – Sanhedrin 43a provides an example.
