That girl can pack a punch. With another groan he starts to push himself back to his feet and gives her a thorough look over. Does he try to be forgiving or hold a grudge and not even bother trying to make nice. What John do? Probably disclose the fact that Sherlock had snuck up on her with the intent to get some form of reaction and so therefore, brought it upon himself.

"As he mentioned, Sherlock Holmes." He manages, still sounding pained and holding his stomach. "That was karate, wasn't it?"