He looked confused for a moment before realizing that the boy didn't recognize him, of course. He broke into a fit of laughter.

"Okay, okay. This is gonna sound really, really weird, but we have met. Uhhhm..." He didn't want to outright say "I'm your physics teacher, Jeff! I gave you a ride in my car, remember?" That might be a little too much of a shock, and it sounded ridiculous anyway. But a moment later he had an idea.

DJ flicked his sunglasses back down over his eyes. "Tadaah!"