The Simpsons Season 17 Episode 10
Homer's Paternity Coot
Mail from forty years earlier is discovered, and a letter from Homer Simpson's mother's old boyfriend states that he is Homer's true father. Homer sets out to find his supposed new father, leaving Abe behind.
Guest Stars
Joe Frazier
Joe Frazier (voice)
Maggie Roswell
Helen Lovejoy (voice)
William H. Macy
William H. Macy (voice)
Michael York
Mason Fairbanks (voice)
Pamela Hayden
Jimbo (voice)