Lilith: Woody, could we have some more pretzels, please?
Frasier: Woody?
Woody: Oh, sorry, Dr. Crane. I- I was just thinking about how big the universe is.
Frasier: Yes, it is, Woody. As a matter of fact, it's expanding all the time. Spiraling outward, ad infinitum, from the center of its origin at an alarming seven miles per second.
Woody: You mean all of us are getting bigger?
Frasier: Well, no, Woody, we we're not expanding. The universe is.
Lilith: Although some of us could stand to eat a few less jelly doughnuts.
Woody: So, as the universe expands, what happens to us?
Frasier: Well, someday we'll just explode into billions of atoms, which themselves will cease to exist in time. Why, in ten quadrillion years, there'll be nothing left of anything.
Lilith: May I have those pretzels now, Woody?
Woody: Sure, better get them while you can.