A customer walks into a restaurant and notices a large sign on the wall 
that says, "$500 if we fail to fill your order." 
When his waitress arrives, he orders elephant tail on rye. She calmly 
writes down his order and walks into the kitchen. Almost immediately he 
hears an explosion of voices. 
The restaurant owner comes storming out of the kitchen and up to the 
customer's table. He slaps down five $100 bills in front of the man. 
"You got me this time, buddy," he says, "but I want you to know this -- 
that's the first time in 10 years we've been out of rye bread."