McCoy reached out and ruffled the kid's hair with a grin, "I liked it too. Never had a younger brother but I always wanted one. Guess you'll do."

"So. How about we do that at least once a week? I think we'll both be the better for it. Humans need touch to stay healthy you know. A baby that isn't touched won't thrive, so a man needs at least one hug a week to be at his best." Probably. Most people really did need regular physical touch to be healthy and sane. McCoy knew he'd been getting less than he should and it was painfully obvious Luke was in the same boat. So he might as well hug his new little brother a lot for them both, right?