"So, you're a time travelling salesman?" I asked when I opened the door.
"Uh, yes," he said sheepishly, "Is it that obvious?"
I pointed at his shoes.
"What? The shoes? I like these shoes."
"Of course you do," I said, "You're a time traveler."
"No! I mean, yes, I am, but that's not why I like these shoes."
I cleared my throat. "Uh, were you going to try to sell me something?"
He sighed, "Yeah, but now I lost my rhythm. I'll come back tomorrow."