Sorry to hear that you were in pain. For me, I must be tickled hard for it to work, and it hurts, and it tickles.. Yes, sore ribs and feet are the consequences of being tickled.
But he should respond if you are saying it hurts!
I watched this movie in 3D, and wouldn't recommend it. Why not? Well, my experience was that during the fast fighting-scenes the 3D didn't manage to keep up and became blurry.
Definitely going to watch it again, this time in 2D. And Johansson's boobies during the first fightingscene were all...