McDonalds turns 75 on May 15th. In honor of this iconic eatery, Mashable takes a look back at the trippy television ads from the 1970s. Blatantly based off of the H.R. Pufnstuf children’s television show, the ads depicted a weird universe called McDonaldland, ruled by Mayor McCheese. As Mashable notes, “It was the 70s. It was weird.” Read more…