"He's usually yelling about something," Marcus agrees with a grin. "If ever a child embodied the spirit of it takes a village, he's the one."

Of course he doesn't mind. Marcus volunteers here because he enjoys it, because he's always found kids and teenagers easy to talk to, easy to relate to in a way. Maybe it's because he'd spent his own childhood in carehomes, but whatever it is, he enjoy his time here.

"If you'd like me to go, just say the word," he says. "I promise I won't bother you for at least an entire day."