'Eveready Harton in Buried Treasure' or 'Pecker Island' is a pornographic animated cartoon, perhaps the first pornographic animation, made in the United States circa 1928 (1929, according to the Internet Movie Database), depicting the unlikely adventures of the perpetually aroused title character with a woman, a man, a donkey and a cow. It is silent, of course, and was created by three studios, who concurrently created their parts of it and merged it together at the end. They didn't see the finished product till the night of the big show, and the laughter back then nearly blew the roof off.