The Bay looks like a piece of bubblegum already. I disagree with
"only 12 and doesn't understand the ramifications." That's old enough to know that artwork on display in a museum is not a place to put your trash, whether you like it or not. Make the parents reimburse the museum for the cost of restoration. And it wouldn't hurt to put his butt to work sweeping floors, cleaning bathrooms, & picking up trash for a few weeks.