You think that is cool?! Let me show you my gas form!
The bird asked the retired secret agent to turn him into a gas to see what it would be like.
Yeah, sure!
Wait... could you also turn me into a gas temporarily?
I almost forgot we have to go to a closed room.
The retired secret agent remembered that when turning into a gas it's helpful to be in a closed room.
The retired secret agent found a good place where he and the bird could turn into a gas.
Ok, here is a good place
Agent: Right now we're in our gas form. We don't have a definite shape or volume! Our particles are loosely packed and our particles interact very little. Our particles are able to flow and move quickly in all directions.
The retired secret agent turned himself and the bird into a gas.
Bird: Wow! This is so cool! I feel as if my whole body were spread out around the room!
Agent: That is because it is. When you're in your gas form you take the shape of the container; in this case: the room
The retired secret agent and the bird talked about what it meant to be in their gas form.
Bird: Interesting! It was nice being a bird but I like being a gas so much that I'm going to stay one for the rest of my life!