In the episode where Krusty the Clown was canceled by Gabbo. One of the celebreties that helps Krusty return to TV was Bette Midler. Lisa and Bart meet her as she is cleaning trash on the highway. Like the sign says.
Snake drives and litters in front of her, Bette Midler chases Snake who says, "Oh no, Bette Midler."
Now Snake has revenge and captured her in her mermaid outfit. Midler wore something similar in her shortlived sitcom. She was singing with Dolly Parton.