What is tee hee?

Tee hee is an interjection typically used to express amusement or laughter. It is often used as a light-hearted response to something funny, amusing, or playful. The phrase "tee hee" is believed to have originated in the mid 20th century and is considered a playful and somewhat childish expression of laughter. It has been used in popular culture, including in the James Bond film "Live and Let Die" where a villain is named Tee Hee. Additionally, "Tee Hee" is the name of a popular children's clothing store in the United States.