Insecure People Annoy me

I'm pretty sure they annoy a lot of other people too.  Here are some "red flags":

1. Continuously talking about the shit they did in the past.  Okay, seriously, if the only thing going for you is what you have done long ago, you need to work on improving who you are now.
2. Being a hater.  Downplaying and belittling good things other people achieve.  You shouldn't need to boost your ego by talking down on others.  If you do, you obviously don't have much going for you.
3. Lying or exaggerating what you have.  I think this one is pretty obvious.