Very uncommon. Arguably one of the most disturbing comedy's ever made.

Meet the Feebles is a 1989 musical comedy produced and directed by The Lord of the Rings mastermind Peter Jackson. The film is set behind the scenes at a Muppet Show-like theatrical company, and it nods to The Muppet Movie with its story about raggedy puppet entertainers dreaming of making it big. Except in Meet the Feebles, most of the puppets are diseased, drug-addicted, and / or sexually perverse. Jackson, his partner Fran Walsh, and fellow New Zealand weirdos Danny Mulheron and Stephen Sinclair collaborated on a screenplay that weaves together about half a dozen subplots; the most prominent involves the talented hippopotamus Heidi, whose lover (and the troupe’s impresario) Bletch is cruelly dismissive and adulterous. As the Feebles prepare for the show that could be their big break, their personal problems start to spill over onstage.

https://www.theverge.com/2018/8/24/17778026/happytime-murders-peter-jackson-meet-the-feebles-perverted-puppets-streaming-recommendation