"Hema's" joke

This is a conversation that took place between an office girl and a marketing guy from a leading multinational company.
Marketing guy - Which soap do you use?
Girl - Hema's
Marketing guy - Which hand wash do you use?
Girl - Hema's
Marketing guy - Which deodorant do you use?
Girl - Hema's
Marketing guy - Which toothpaste do you use?
Girl - Hema's
Marketing guy -Which shampoo do you use?
Girl - Hema's
Marketing guy - Which washing powder do you use?
Girl - Hema's
Marketing guy - Okay, Okay, tell me, What is this Hema's? You think it's an international company???
Girl - No, she is my roommate.