I only do babies and toddlers for daycare, but I personally have an almost 8 year old son, and there is no way in HELL that he'd be screaming, yelling or talking like that. Period.

The potty words I get, but why does he have to yell? Not at all acceptable. He's is plenty old enough to understand this. And...just because potty words are age appropriate doesn't mean you have to let them fly. My son gets away with a few on occasion, but normally I just have to say, "oooohkay....com e on now" and he gets it, and stops.

The running and bouncing off the walls I also get. My son is wicked hyper. Can you send them out back? down to the basement? They do need to run this energy off in some way, but my own kids and my 2 year old daycare kids all know that we do not run in the house or jump on my furniture.

Lay down the law. FAST. Good luck.

ETA - I absolutely hate the expression, "boys will be boys". That's all I'm gonna say about that