A customer walks into the store

Two employees named Bob and John are in a store when a customer comes in. The customer has long hair and a slender body yet big muscles and broad shoulders. Bob says to John “Is that person a male or female. Its really hard to tell.” John says, “I’m not sure but I think she is a woman.” Bob shakes his head and says, “I think he is a man. But I will find out.” So they make a bet. More customers come in and John leaves to finish his work as Bob walks around the store. When they meet again John asks, “What did you find out?” Bob says, “I asked the person 'Who are you?' and the customer replied ‘I am Amanda’. Obviously he is a man, duh!"