Anything slide

The anything slide was a helter skelter that was the subject of a joke within a joke book that the Thirteenth Doctor and Yasmin Khan were trapped in.

The joke involved Amy Pond and Rory Williams discovering the slide in a room in the Eleventh Doctor's TARDIS. As explained by the Doctor, one would shout out whatever they wanted as they went down the slide, and the TARDIS' telepathic circuits tuned into what was said and materialise a big heap of it at the bottom. After the Doctor demonstrated by wishing for a pile of jelly babies, Amy went down the slide wishing for chocolate, while Rory, having fun on the slide, simply shouted "Wheeeeee!" all the way down... (PROSE: Knock! Knock! Who's There?)