Hey, you know that spell Engorgio? It confuses me a lot! Therefore I have a few questions.

1. Can you use it on a human?
2. Does it multiply, or just supersize the particles?
3. Can it be used on food?

There are just so many questions evolved around this spell! J.K should have gone into more depth about it! Because it doesn't make sense! And it has left many plot holes! Like in the Deathly Hallows when they were hungry and thirsty.

Discuss...