You are doing some shopping at Walmart when you notice an old man staring at you intensely.

The moment he realizes that you have noticed his staring he quickly reaches inside his pocket and pulls out... a lighter. He shoves the lit lighter in your face, almost burning your nose. The man's eyes are wide and crazy-looking but he seems to calm down a little.

You didn't blow up. Hmph. So I guess that means you're not one of them.