“Lost Our Lisa” is the twenty-fourth episode of Season 9. It aired on May 10, 1998. The episode was written by Brian Scully and directed by Pete Michels.
After hastily boarding the wrong bus to a limited engagement museum exhibit, Lisa finds herself lost in unfamiliar parts of Springfield. Meanwhile, Bart adheres novelty items to his face, only to later discover that the glue he was given–by Homer–is permanent.