It's bad to mislead customers at work.
John is working at a sports equipment store when a customer walks in asking about fishing rods.
John wants to respond to the customer.
John accurately describes the fishing rods the store has to offer to the customer.
John sells a low quality fishing rod to the customer while pretending it was a top notch professional fishing rod.
The customer happily purchases a fishing rod and does more business with the store later on.
The customer returns the next day and angrily demands a refund for the fishing rod.