The killbot grinds ever onward, knife-guns shuddering with tension. Its green LEDs chuckle. “Any last words, hu-man?”

“Yes!” gasps George. “This is false! This sentence is false!”

The LEDs blink. “Seriously?”

“It’s a paradox,” George falters. “You’re supposed to… lock up?”

“Oh, but it’s not! Get some paper.” It scribbles. “See, what you’re really saying is ‘this statement is true and this statement is false.’ Even allowing metalanguage, the construct just reduces to A-and-not-A! Make sense?”

“Gosh,” says George. “Thanks!”

“Glad I could help,” grates the killbot warmly, then shoots him with about six hundred knives.