Don't think I'm bi-polar, but I do feel pretty manic sometimes.
One time in high school, I was mcing my high school talent show and was just loaded with energy (hadn't slept in like a week I was so wired). During a delay between acts, I decided to do a full strip show for the audience. My friend/co-host realized I was in one of my moods, and yelled out: "For the love of God! Keep your pants on, Jeremy", and then she wrapped herself around my legs to make sure I did. Everyone thought it was rehearsed, and laughed. Only I know she probably had saved me from expulsion, 1 month from graduation.
I definitely came down from that. A few weeks later, I wouldn't even take my shirt off to go swimming with my friends, and I slept like 12 hours a day.
I'm not sure which version of myself I prefer

Manic Exhibitionist, or shlubby depressed dude. Other people prefer the former, as long as they don't live with me everyday. I'm mostly shlubby depressed dude though.