You have to love yojijukugo. Combine four kanji to get one idiom worth a thousand words. Or, at least 140 characters.
げい いん ば しょく
drink like a fish and eat like a horse; eating mountains of food and drink oceans of liquor [jisho]
Not sure why the standard translation is eat like a fish when the kanji is for whale. Whales drink more, too. Maybe it's because in English "drink like a fish" is an actual saying, so it makes more sense that way in English.
Anyways, try this yojiukugo out when talking about someone who drinks too much alcohol and eats too much food.