I was 99% sure you were just joking, who would say something like that and be serious? Yet, to be straight forward I've only exchanged a couple words with you and I dunno what you're like, but still it was just kinda weird, lol.. That's not my culture or and people don't usually act like that around me, I do remember a friend I used to have that was kinda like that.. But even for him joking about punching my father would be strange.
I assume where you are from it's much more normal to joke about punching each other. I apologize for not just going along with the joke and laughing, but it just seemed a bit foreign to me.
PS I posted another image of my fathers today and it did well again! I have a good feeling he'll eventually sign up and try it out. ._. Not 100% but.. A good feeling.