Overuse of "12-year-old"

I would like to tell you, if you use any age to describe someone bad I am downvoting you unless you are funny or have a very good idea/comment. This decision is a combination of two things:

1. I am older than 12, trust me, but I find it unreasonably that you use 12 for any annoying person. I've even seen people say "he must've been a 15 year old" which is, getting pretty old for someone to be a complete r%%%%%. If someone is getting that old and are still annoying, that is just how they are then

2. It is used way to much. This is the same problem I have with other topics that have been posted 20 times. I didn't care until it started coming up every day