eat like a pig它既可以指食量大；也可以指吃相或餐桌礼节不好。

【例句】
This lunch looks so great, I will eat like a pig.
这顿午餐看起来非常棒，我会吃得很多。

When I was young I could drink like a fish and eat like a pig.
我年轻时酒量和食量都很惊人。