"Eat like a pig" is a phrase used to describe someone who eats messily, greedily, and without regard for others. There are several synonyms for this phrase, including "guzzle," "devour," "chow down," "wolf down," "pig out," "feast," "gorge," and "stuff one's face." Each of these words emphasizes the idea of consuming food quickly and excessively. It's important to remember that using these phrases to describe someone's eating habits can be considered rude or insensitive. Instead, it's best to use positive language when discussing food and eating, such as "enjoying a delicious meal" or "savoring each bite".