It's wrong to push a product to your family.
Dave is finished training as a salesman at a printer company and is tasked with making his first sale.
Dave wants to telephone someone to pitch the printer to.
Dave calls the first name he sees in the phone book and pitches them a printer.
Dave calls his mom and pitches her the printer as if she was any other regular potential customer.
Dave's mom is proud of Dave trying to succeed in his career.
Dave's mom does not appreciate Dave mixing business with family like that.