Great Glass Elevator - Everything Proof

'Dear lady,' said Mr Wonka, 'it can't possibly get in here. I don't mind admitting I was a trifle alarmed back there in the Space Hotel. And with good reason. But here we have nothing to fear. The Great Glass Elevator is shockproof, waterproof, bombproof, bulletproof and Knidproof! So just relax and enjoy it.'

(...)

At this point, the massive Knid outside turned and started cruising away from the Elevator. 'There you are,' cried Mr Wonka, triumphant. 'It heard me! It's going home!' But Mr Wonka was wrong. When the creature was about a hundred yards off, it stopped, hovered for a moment, then went smoothly into reverse, coming back toward the Elevator with its rear-end (which was the pointed end of the egg) now in front. Even going backwards, its acceleration was unbelievable. It was like some monstrous bullet coming at them and it came so fast nobody had time even to cry out.

CRASH! It struck the Glass Elevator with the most enormous bang and the whole thing shivered and shook but the glass held and the Knid bounced off like a rubber ball.

'What did I tell you!' shouted Mr Wonka, triumphant. 'We're safe as sausages in here!'

'He'll have a nasty headache after that,' said Grandpa Joe.

'It's not his head, it's his bottom!' said Charlie. 'Look, there's a big bump coming up on the pointed end where he hit! It's going black and blue!'

And so it was. A purple bruisy bump the size of a small car was appearing on the pointed rear-end of the giant Knid.

***

Charlie and the Great Glass Elevator, Chapter 8