Bakemonogatari episode 14 has a fairly famous tongue-twister in it, which Black Hanekawa recites with her cat voice. It was translated as: "Can you imagine an imaginary menagerie manager imagining managing an imaginary menagerie?". The scene is here (potentially NSFW):
Translating tongue-twisters is notoriously hard, so I suspect this is done fairly liberally.
What is the original Japanese text which is being spoken? Also, what does it literally mean (not worrying about making it a tongue-twister)?