Lyndon B. Johnson's head

Lyndon Baines Johnson was the 36th President of the United States from November 22, 1963 until January 20, 1969. By 3011, Johnson was preserved as a head in a jar and stored in the Head Museum in New New York. Zoidberg drank water from his jar, which took him, as well as Professor Farnsworth and Amy, back in time to the 1960s.