A dialog between a physicist and a drunk man on E=mc^2

Physicist: Hello, sir. Do you know what E=mc^2 means?

Drunk man: Eh? What are you talking about? Is that some kind of code?

Physicist: No, it's not a code. It's a famous equation by Albert Einstein that relates energy and mass.

Drunk man: Energy and mass? What does that have to do with anything?

Physicist: Well, it means that energy and mass are equivalent, and can be converted into each other. For example, when a nuclear bomb explodes, some of the mass of the bomb is converted into a huge amount of energy.

Drunk man: Really? How much energy?

Physicist: Well, according to the equation, the energy is equal to the mass times the speed of light squared. The speed of light is about 300,000 kilometers per second, so if you square that, you get a very large number.

Drunk man: How large?

Physicist: About 90 quadrillion joules per kilogram. That's enough to power the entire world for a year with just one kilogram of mass.

Drunk man: Wow, that's amazing. So, can I use this equation to make myself more energetic?

Physicist: No, I'm afraid not. You can't just convert your mass into energy by yourself. You need a very high-energy process, like nuclear fusion or fission, to do that.

Drunk man: Oh, I see. Well, what about the other way around? Can I convert energy into mass?

Physicist: Yes, you can, but it's also very difficult. You need a very high-energy particle accelerator, like the Large Hadron Collider, to do that.

Drunk man: The Large Hadron Collider? What's that?

Physicist: It's a giant machine that smashes subatomic particles together at very high speeds, creating new particles and sometimes mass.

Drunk man: And where is this machine?

Physicist: It's in Switzerland, under the ground.

Drunk man: Switzerland? Why Switzerland?

Physicist: Because it's a neutral country, and it has a lot of scientists and engineers who work on it.

Drunk man: I see. Well, thank you for explaining this equation to me. It's very interesting.

Physicist: You're welcome. Have a nice day.

Drunk man: You too. Cheers!