Yes they should
No they shouldn't
I did this once to a girl at my school. Suddenly I became a villain!
I think so. Hormones do strange things to people, on a monthly basis. Some are more influenced than others. But that is no different than many illnesses men have, i.e. Diabetes, High Blood Pressure, etc. Your health impacts your mood, it doesn't matter if you are male or female. Obviously, if you are crude in calling-out a person, that's uncalled for. There is a more delicate way to handle the situation. If your girlfriend is having her monthly (and you know it), crabby, etc. ... offer to fix dinner or order some take-out. Tell her to relax. Let's be honest, it's better than hearing her bang pans & b*tch!
It's time to go for a long bike ride or something :/
What's the actual point, it just pisses us off. NOT ALL WOMEN ON THEIR PERIOD ARE ANGRY, AND WOMEN AREN'T JUST ANGRY WHEN THEY'RE ON THEIR PERIOD!