The character of the bhabhi has been a staple in Indian media for decades:

Before understanding the character, we must understand the name. "Sharmili" is derived from the Hindi word sharam (shyness/modesty). A "Sharmili" woman is traditionally portrayed as bashful, soft-spoken, and virtuous. When you combine this with "Bhabhi"—a figure of respect, care, and forbidden allure in Indian families—you create a powerful dichotomy.