Grandpa, Bart and Lisa Simpson take off on a cross country journey when Homer and Marge just want to spend a bit of kid free time.
Guest Cast
Cast Appearances
Dan Castellaneta
voices Homer Simpson
Julie Kavner
voices Marge Simpson
Nancy Cartwright
voices Bart Simpson
Yeardley Smith
voices Lisa Simpson
Dan Castellaneta
voices Abraham Simpson
Nancy Cartwright
voices Nelson Muntz
Nancy Cartwright
voices Ralph Wiggum
Hank Azaria
voices Moe Szyslak
Hank Azaria
voices Carl CarlsonEpisode Discussion
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