Apes-A-Poppin'

Apes-A-Poppin' is a movie.

History
Bart rented Homer's favorite gorilla movies, Gorilla Squadron, Gorilla Island VI, and Apes-A-Poppin '  before he was going to give Grampa one of his kidney. When Homer found out that Apes-A-Poppin '  is the airline version he becomes very happy.

Behind the Laughter
It appears to be a parody of the 1941 musical film  starring a cast of apes.