I eat a lot whether I'm manic or not, but for me, my spending habits increase to an extreme level when manic. I'll blow my entire checking account on luxury items, and have before blown my entire savings account on them too.
I do get irritated from time to time while manic, but not always. Depends on what triggered me to become manic. If it was a political video or comment, then yeah, I may be irate, but if it just happened, I probably won't be.