Reminds me on my son when he was little. He was like that all the time, especially with the inappropriate noises and bouncing around. He has high functioning autism. It looks a lot like mania, as adults know mania. With interventions, he has calmed down a lot and no longer seems "Manic." When a child seems overly hyer, makes weird noises, looks for sensory satisfaction (bouncing, running, shouting, touching everything, rolling on the ground), and doesn't seem depressed (but may melt down easily) you may want to see a neuropsychologist (not a psychiatrist) to check out ALL disorders. But it could be high functioning autism. It looks a lot like extreme ADHD or mania, without the kid ever coming down. Anxiety is high with it. My son was misdiagnosed with bipolar, and the consequence was very heavy medication routine that was unnecessary and a delay in Pervasive Developmental Disorder (PDD) interventions. Be careful as they mimic each other. You seem unsure, as you should be. Don't take the first diagnosis. as gospel and be careful about giving him heavy duty medication. They WILL calm him down--my son was sedated. But, unless it really is bipolar, it's not going to help in the long run.
Hopefully, see a neuropsychologist. Did he have any speech delays or speech issues? Can he make strong eye contact with strangers? Does he understand how to interact with his same age peers? Does he talk way too loud...lol (this was a big one for mine). Ever cover his ears or freak out in a crowd where there is too much stimuli?
I have bipolar/mood disorder spectrum. I was a very sad and upset child, but I did not act like that and my layman's opinion is that he is sensory seeking, not exhibing mania. My mania as a child was non-stop talking and a feeling of extreme happiness, as if I was infallible. When I was depressed, I cried and was fearful of strange things, such as bandages. I would never have blurted a swear word at my parents. Although everyone is different, I didn't bounce around.
Good luck, whatever you decide to do.