Tickle-Me Dolls are a popular toy that were first released in 1965 by the toy company Hasbro. They are best known for their signature feature of laughing when tickled. The dolls are based on the character Elmo from the children's television show Sesame Street. Elmo is a red furry monster who loves to laugh and play. He is one of the most beloved characters on the show and has become an iconic figure in pop culture.