Answer:
What starts with an "e" but only has a single letter in it?
An artยญ-form and its colourful result.
What do you have in December that you don't have in any other month?
This type of corn swells up and bursts into a crisp puff when heated.
How can you throw a ball as hard as you can, to only have it come back to you, even if it doesnโt bounce off anything?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?