Cafeteria intrigue

I have cafeteria ladies spying on my son now. Does that make me an overprotective parent?

At issue is the fact that we've been giving him $1.25 to buy a Snapple with lunch, but that money has often been going to a classmate -- whether because he's a bully, an opportunist, or a willing recipient of my guy's generosity, I don't know. He's a child with special needs, too, and I don't want to get him in trouble, and I don't want my son to be a rat, I'd just like the $1.25 to go to the purchase of a Snapple consumed by the appropriate party, or be returned to me.

I've been conferring with the very helpful food-service coordinator, who suggested that the workers who run the Snapple-selling snack bar could tip me when he doesn't buy one. Apparently, my guy's well-known, and they're willing keep an eye on him. I hope this can be done without turning the whole thing into a federal case. I hope that just knowing I'll know will be enough to stop the illegal transfer of funds. But we'll see.