Explain me async like I am a Kid

You're told to clean your room. You agree but don't do it right away because you've got more important things at hand. Once you've finished with those, you either clean your room or you don't. Your cleaning the room is asynchronous task, because in a queue after the stuff you're busy with.

That's basically event loop with micro and macro tasks and pending/resolved Promises in JavaScript 🤓

You turn on the TV to watch your favourite cartoon. However, it will take a while for the show to start so you play with your action figures meanwhile :D

The action of turning on the TV and waiting for the response (the show) is an asynchronous function

When someone give you a promise, you have to await the result.