Go AT&T on someone

I'm not a mean person, by any means, but every now and then I just get the urge to whallop the hell out of someone. It could be someone I don't even know and has never done or said anything to me...I just get the urge and the there's an underlying feeling that if I do -- I will feel much better...MUCH better...luckily I haven't...time to take my meds...where are my meds...oh, shit!