I had some pie of mine that I put in the refrigerator attached with a note saying "Don't eat me."
The next day, I opened the refrigerator door. The pie was gone, but there was a note saying, "Don't tell me what to do."
Eating too much pi, can give you a large circumference.
A customer walks into a restaurant and notices a large sign on the wall, "$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 where chaos breaks loose!
The restaurant owner comes storming out of the kitchen. He runs up to the customer's table, slaps five $100 bills down on it and says, "You got me that time buddy, but I want you to know that's the first time in ten years we've been out of rye bread!"