What do someone means when they hit the sauced?

It's a casual and informal way of saying someone is about to start consuming alcoholic beverages.

Here are some examples:

* "I'm feeling stressed, I think I'm gonna hit the sauce tonight."

* "We're having a party, so get ready to hit the sauce!"

* "He's been hitting the sauce a bit too hard lately."

Remember, it's important to drink responsibly.