PMS effect every woman differently. Mostly in a negative way. When it comes to me, I would say that PMS has the same effect on me as anger on Bruce Banner. I turn into a mini-hulk type figure stomping around yelling “ELENA SMASH!” (I would love to tell you I’m exaggerating but I have actually been known to do this when I’m really annoyed at something or someone.)
So when I have PMS I would advise you stay away (but not too far or else I will start crying and accuse you of ignoring me) and tread lightly. And for your own safety, please for the love of God do NOT eat my chocolate or ice-cream!