I was blind in one eye and anyone who joked about it was moered by the matrics. I was in the chess team. I played rugby and broke my leg in 27 places. I cheated on my medical to not suffer the humiliation of being sent home and not conscripted. Can I also claim some bully sympathy???
Anyways, who were these 3 guys who pushed him down the stairs? Just name this and ask them what happened. Or one of his class mates would know.
Personally, I think he didn't tie his shoe laces and made up the story when he tripped.