Revenge of the Plastic Bag
Not Episode III, more like Episode II (see Episode I). Leela discovered another plastic bag a couple days ago, and managed to play pretty much the same trick with it.
This was a bigger, heavier bag from a college bookstore, meant for lugging 25 pound chemistry textbooks around. She found it and stuck her head through one of the openings. Then, once again she panicked and took off and the bag went with her and she panicked more. Your basic feedback loop running out of control.
We didn't see this the first time. We just heard this godawful noise tearing through the house and couldn't figure out what it was. Eventually I found Leela under our bed, still wearing the bag. She'd somehow managed to stop, and when she did the bag stopped making noise and attacking her, so she stayed put.
I carried her downstairs to show Elisa what had happened, and she freaked again. Jumped out of my arms and took off on a circuit around the living room furniture. This time we had a great view. The bag fluttered loudly in her slipstream just like a cape. She looked like a little bengal superhero.
Also, of course, the opening was facing forward so, as she ran, the thing scooped up air and inflated like a parachute. Presumably it was putting a fair amount of drag on her (which you know, isn't a bad idea...) but it didn't seem to slow her down a bit. Eventually she stopped again and Elisa managed to get the bag off her. We can only imagine what the next version will be. Next step up would probably be a full-size drawstring trash bag.