In the episode where Hawkeye and B.J. are attempting to cure Col. Potter's constipated horse, Hawkeye spontaneously sings the "M-O-U-S-E" line from the Mickey Mouse Club song. That song was copyrighted in 1955, two years after the Korean War ended. The Mouseketeers made their TV debut in July 1955 on an ABC special celebrating the opening of Disneyland. So Hawkeye is singing a song that didn't exist.