All that power packed in the older fella's punch. No posing. No nothing...you wouldn't be able to tell.
Never judge a book by its cover!
Good thing for the younger bigger fella grandpa walked away or he would have ended up in a hospital LOL
Having a power punch is a talent, like having a great arm, or being fast. You got it or you don't. He's obviously a former fighter too. Funny as hell!