"wearing a short Mighty Mouse T-shirt"

Mighty Mouse was a cartoon superhero mouse created by the Terrytoons studio. He originally appeared in 1942 as a parody of Superman, and became a cultural icon during the 50s when he was given a television show. The show ended in the 60s, was revived briefly in the 70s and 80s, but the character has not been seen since the 1990s.