On The Simpsons Season 25 Episode 14, the family has to take in both Grampa Simpson and two of his retirement home friends when the Springfield Retirement Castle is closed because of too many violations.
Homer's is initially very annoyed by the old people in his house, but he begins to enjoy their lifestyle and decides to act like an old man.
Although he's happy, Marge finds herself less attracted to her husband.
Elsewhere, Bart becomes friends with Nelson Muntz and is made an honorary Springfield bully.
Watch The Simpsons online and see Bart join Dolph, Kearney and Nelson at a bully summit held at an abandoned Six Flags Over Krustyland.