Pooh's Adventures of Tiny Toon Adventures: Thirteensomething is the 5th Winnie the Pooh/Tiny Toons crossover film by DisneyJSman. It appeared on YouTube on March 2010.
Buster and Babs are going to watch TV tonight and Babs' choice of Thirteensomething is decided. Babs decides to audition for Thirteensomething on a bet with Buster. Babs reaches New York, while Buster and Pooh and the gang fail to find a replacing co-star. Babs disguises herself as a lady called Babs Bunnawalskioversmith to audition and wins the part. Despite the new fame, Babs begins to miss Buster, and vice versa. During the next show taping, Buster and Pooh and his friends show up. He, the others, and Babs divulge their true identities before they make their escape.
- This film was a request from Toonguy500. His named is mistakenly credited for co-writting, co-directing, and co-producing the movie, but he never did any work on the film because he was still busy writting Pooh's Adventures of The Rescuers for DisneyDaniel93 at the time.
- GoGo DoDo made a cameo at the end of the ending credits of the film.