A Tale of a Tail. Waldo Williams returns from his Tijuana vacation to find he is infected by the Notorious Mexican Butt Humping Bullfrog with just days to live. Waldo seeks the help of Dr. Wansamsaki, a specialist who treats Waldo with his unorthodox methods, which involve a long nuclear rod. The next day, Waldo’s rear end starts glowing a bright green – and that’s only the beginning!