"Right then, back to work." She turns and gets up, starting to write and draw on the board.  Once she has finished, she turns back to address the class. "As you can see here, there are many methods available to you! We shall cover these all in later lessons, but for now, we'll just focus on this one... Belly rubs! Belly rubs can relax the stomach to stop it from digesting you. It can also please your predator, or even let them know that they've swallowed you if they did it by mistake. Of course, this shouldn't need any real expansion, just get swallowed and start massaging! We'll see who 'lasts' the longest. Once you see or feel a liquid rising around you, stop rubbing because your predator has digested you and you have to spend the rest of the lesson inside them! I'll shrink anyone who needs shrinking, of course."