One day, a man sees this sign and decides to take them up on it. So when gets seated, he tells the waitress that he wants an elephant testicle on rye bread.
She dutifully takes his order back to the kitchen. A few seconds later he could hear all hell breaking loose in the kitchen: there’s people shouting, swearing, pots and pans banging. A few minutes later, the manager comes out with $500 in hand.
“You really got us,” he says, “this is the first time in ten years we’ve been out of rye bread.”