Transcript:
Alice: The jungle gym looks bigger. Dill: It's growing. It grows during the night. One day it'll cover the planet, and we'll live in a giant jungle gym. Alice: Then my dad will commute to work by tube slide! Dill: Haha! I bet he rips his pants!
The static electricity those things generate could mean a very painful shock when you reached your destination. Hell, on some of them you get shocked on the way down from the static buildup being discharged on the screws holding the thing together!