Oh yes being on your period is definitely a reason to be ridiculous.
I don't see it as an excuse to treat people badly or be horrible to your boyfriend/family/friends etc, mind you, but being moody and emotional and generally doing things you wouldn't normally is definitely a thing.
I flat out sob over the tiniest things anyway, let alone when my period is around the corner.
One story that my friends ask me to retell over and over is when I had set aside a sausage roll for when I got home from school one day. I can't remember how old I was but I was definitely in my mid teens. Anyway, I have always been a lover of eating food, generally most people are, but often mealtimes are on my mind all day and I look forward to good food if I know it's coming.
All day at school I was thinking about how I couldn't wait to get home and have a cuppa tea with my sausage roll. I walked in through the door, having just started my period that morning, and caught the tail end of my sausage roll being eaten by my brother in the kitchen.
I cried, he felt bad and ended up crying for making me cry and generally I did not have a good day. :'
I also cried when I realised Obama wasn't going to be the President of the US any more. I don't really know why I just thought I was gonna miss him and I'd started my period. Made my boyfriend laugh though :P
Generally I spontaneously cry over most stuff anyway, but my period just makes me sob constantly. I get angry sometimes but very briefly and at really weird things. I got angry last week because all my markers fell out the packet in my rucksack and wouldn't stay in there. It's always short lived though!
The only time my period genuinely gets me into trouble is if me and my mom sync up, we will most likely end up getting snappy at each other.