Just after a general consensus here -
DS2 was just being silly, running an throwing himself at the couch and being a leather couch, he's had too much momentum and somehow managed to throw himself over the arm of the couch and landed on the tiles and cupboard - was an almighty BANG and looked like he'd landed on his head.
He calmed down pretty quickly and on closer inspection, looks like he's landed sort of high on his cheek bone, near the eye socket. It's red and no doubt he'll have a cracker of a black eye tomorrow or the next day, though when I gently push on the area, he doesn't react or say its sore.
So would you do a hospital run or just stay on concussion watch for the next hour or so?