Como dizer "Comer com farinha" em inglês

And while at it, speaking of immoderation and excesses:

To talk about chain-smoking habits, we could say "he smokes like a chimney."

Todo o diálogo acima só diz que ele bebe muuuito.

Então:
He drinks as a skunk/fox.
He drinks like a skunk/fox.

Se fosse "comer", seria ele come muuuito.
He eats like a horse.
- to eat large amounts of food.

and so on...