It's good to be "big" or "fed" or "fat" but bad to be "heavy."

Let's put it these terms:

Fed - The champion acquired the nutrients it needs to grow strong and powerful.

Heavy - The champion has done jack shit and is so lazy that you can't carry it.

https://badbooksgoodtimes.files.wordpress.com/2015/09/makessense.gif

I always assumed "heavy" was just another word for tanky bruiser.

And that seems just fine to be right now.

Heavy is hard to carry.............

http://i.imgur.com/mm4lZUY.gifv

a fed champion is one that has more items. a heavy champion is one that isn't helping.

you can be fed, heavy, both, or neither at any given time.