It's only awarded to the military, so first you'd have to get Chris into the military. That in itself is impossible, so we have to stretch things really far here. We'll say the draft has been reinstated, and despite how unfit for service Chris is, nobody believes any of it, and he's forced through the training and passed just to get rid of him, just like a PVCC. The "easiest" way to get the MoH is to die while saving the lives of others. So, Chris is in a bunker with his squad, playing his PSP and stuffing his face. A terrorist throws a new small but extremely lethal grenade in, while everyone else hits the deck, the grenade lands in Chris' snacks and oblivious to all that's going on around him, he eats it. His bulk contains the explosion, saving his squad. Thankful that their lives were saved, the squad all says that Chris deliberately swallowed the grenade to save their lives, and Chris becomes a hero.