The owner again retrieves a dirty fork and brings it to the blind man. After another deep breath, the blind man says, “That smells great, I’ll take the Macaroni and cheese with broccoli. 

Once again walking away in disbelief,the owner thinks the blind man is screwing around with him and tells his wife that the next time the blind man comes in he’s going to test him

The blind man eats and leaves. 

He returns the following week, but this time the owner sees him coming and runs to the kitchen. He tells his wife, “Mary rub this fork on your panties before I take it to the blind man. ” Mary complies and hands her husband the fork back. As the blind man walks in and sits down, the owner is ready and waiting. “Good afternoon sir, this time I remembered you and I already have the fork ready for you. ” 

The blind man puts the fork to his nose, takes a deep whiff and says, “Hey I didn’t know that Mary worked here? “