"A shamus joke" joke
A shamus is a guy who takes care of handyman tasks around the temple, and makes sure everything is in working order. A shamus is at the bottom of the pecking order of synagog functionaries, and there's a joke about that:
A rabbi, to show his humility before God, cries out in the middle of a service, "Oh, Lord, I am nobody!".
The cantor, not to be bested, also cries out, "Oh, Lord, I am nobody!"
The shamus, deeply moved, follows suit and cries, "Oh, Lord, I am nobody!"
The rabbi turns to the cantor and says, "Now look who thinks he's nobody!"
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