Drink a Gelatinous Cube

This monster will reach the town if you don’t stop it right here, right now. You bravely leap head first at the giant, viscous cube before you, lunging at it with your Sword of Righteousness. As you do, you scream your signature battlecry:

“This is a good ideaaaaaaa!”

With a loud SPLAT, you find yourself floating aimlessly inside the slime creature’s body. You may have underestimated your opponent. Being inside the gooey villain is like being underwater, except distressingly orange, and there are little air pockets bubbling inside. You open your mouth for a second and taste a bit of the monster’s mucus. To your surprise, it tastes good, like a very, very sweet berry wine. Could you drink your way out? Were all those boozy, lost nights in the alehouse actually training for this very moment?

What would you like to do?

To drink your way out, roll a 20 sided die. This is a very D&D-like game, after all.