Meyer sighs. The reason he'd gone out here in the first place was to avoid people who might try to amuse themselves with his counting problem. He wouldn't be at all surprised if Dean really did spill that bag of rice, and he wouldn't be at all surprised when he started obsessively counting it.

"I'd really rather you didn't," he says, shaking his head wearily. "It wouldn't be much fun for either of us."

There could be an implied threat there. Possibly. If he gets angry enough. Of course, he's not much danger, not when he's diverted by counting things.