Scene: Batman and Robin are tied back to back, on two chairs in a room with two cardboard walls. Joker is in the background with his hand on a giant switch, laughing maliciously. The walls begin to move closer and closer towards Batman and Robin.

Robin: Talk about a tight spot, Batman! Looks like we’re about to become closer than ever!!!
Batman: Shut up Robin! We’re on TV!!!
Robin: But Batman, what can we do???
Batman: Well, Robin, if you can work your hand into my security belt and touch the telescoping power rod…
Robin: (struggling) No dice, Batman, I’m stuck tight!
Batman: Well, keep working at it Robin. We don’t know how long it will be before we’re wall pizza.
(Both struggle futilely until Robin begins yawning strangely and shaking his head.)
Robin: Holy diving bell, Batman!!! It feels like I’m under water. (Rolls his head.)
Batman: You’re right, Robin! The air pressure must be increasing!
Robin: Holy redundancy, Batman!!! Besides squashing us like bugs, he’s pumping extra air in here too????
Batman: I doubt it, Robin. I think the increasing air pressure is just an unintended result of decreasing the volume of the room.
Robin: How is that?
Batman: The pressure and the volume are inversely proportional, Robin. Decreasing the volume of the room, increases the pressure when the temperature and the number of moles are held constant.
Robin: The pressure and WHAT???? You lost me Batman!
Batman: Sorry, Robin! I’ll keep it elementary. If my guess is correct, the Joker may not realize this is an airtight room.
Robin: Yeah???
Batman: So bringing in the walls is compressing the original quantity of air into a smaller volume.
Robin: So how does that increase the pressure?
Batman: You may not realize it Robin, but air is a very active medium. Air pressure is a cumulative result of countless collisions of air molecules with one another and with the environment.
Robin: Holy mathematics, Batman!!!! Does this require solving an algebraic equation?
Batman: Indeed it does, Robin! And it would be a nicely linear relationship if the process were kept isothermal.
Robin: Iso…WHAT???? I could sure use some ice now to cool me off a bit.
Batman: You are sensing the increase in temperature due in part to the increase in pressure.
Robin: So he’s planning to squash us into pizza and bake us???
Batman: Cool it, Robin! Concentrate on the physics relationship between Pressure and Volume.
Robin: Holy physics final, Batman!!!! Isn’t there an easier way to put it?
Batman: Imagine molecules of air as a numberless swarm of angry bees.
Robin: Holy Hitchcock, Batman!!!! That’s pretty scary!!!
Batman: Well, Robin, not many things look benign once you get close enough to ‘em!
Robin:(Looking around nervously) But holy antihistamine, Batman…
Batman: All right, Robin! You don’t have to imagine the whole swarm. For complex systems, physicists always use quantum mechanics and consider the simplest system. Just imagine the one bee.
Robin: (Relieved) Aw…now that’s a walk in the park!

Assistants enter wearing bee hats and play bees, moving in a straight line through the area until they hit something, at which point they give a little push and bounce off in another direction.

Robin: Like a handball bouncing off the wall!!!!
Batman: Exactly, Robin! So one molecule gives a little push every time it hits something. Imagine billions and billions of little pushes given by the billions upon billions of molecules in a given room!!!
Robin: Holy traffic jam, Batman!!!
Batman: So imagine the one bee bouncing back and forth against the walls of this room at its original size. Let’s say you bring the walls in so the room is half the size.
Robin: Let me try that (walls close in half way).
Batman: Now that bee is going to end up pushing the walls twice as often (bees hit walls twice at a faster pace).
Robin: So, Batman!!! It’s as if all those air molecules are on our side!!!
Batman: Yes, Robin! The smaller the room becomes, the more help we get from our invisible friends.
Robin: But Batman! Those molecules are wasting a lot of time hitting the fixed walls. How can we get them to concentrate on the shrinking walls?
Batman: Sorry, Robin! That’s Mr. Newton and his laws of motion.
Robin: Mr. Who??? Please don’t make it complicated for me again, Batman.
Batman: Molecules, like everything else must obey the laws of motion. They don’t decide where they want to go. They just go, Robin. Can’t change direction until they collide with each other or the walls of the container. Always in a straight line, Robin.

(Both with feet up against the cardboard walls with bee going back and forth frantically bounding from one wall to the other.)

Robin: Batman! I don’t know how long the two of us can hold out!!!!
Batman: Not just the two of us, Robin! The two of us and zillions of air molecules!!!
Robin: Holy pressure cooker, Batman!!! Are we all going to fit in here????
Batman: Don’t worry Robin. Remember that a mole of liquid water is only 18 CCs, but it occupies 22.4 liters as a gas at standard temperature and pressure.
Robin: It’s sure getting hot in here, Batman!!! Are we going to make it????