I don't think homicidal thoughts are a BP trait. I cannot say I have them. Sui thoughts from time to time-yes.
Irritability is a major trait of BP in my opinion, especially during a mixed episode. If anyone has a sure proof way of getting past this major irritability, pls PM me, lol.

I also read a post about BP and irritabilty on bipolarhappens.com the other day.

Homicidal thoughts technically means that you are endangering others, and you need to earnestly speak to someone. If you think you fit the profile of BP, please see a professional ASAP-especially about those thoughts!