A mathematical proof is like a good joke. It starts off with a statement of the obvious, but by the time it's all said and done, it's a completely different story.
Or, you know, maybe it just starts off with 'Let x be a real number', because, honestly, who doesn't love a good existential crisis?
Either way, it's a real treat for the mathematically inclined.
Don't forget to tip your math teacher, folks!
Or don't. We won't judge you either way.