I forgot how fucking annoying it is to hangout with 18 year olds.
Okay but why you are hanging out with 18 year-olds if you find them annoying?
18 year olds are annoying and they make me want to smash my head against the wall. They're super full of themselves and they think they know everything when they know nothing like how kids are.
Its ok that you do realize that 18 years old is a young age, and some may come across as annoying. However, it is unreasonable to feel that all 18 year olds act like this. Also, getting this emotional about an 18 year old may show that you have certain aspects of your personality that can be worked on as well.
I don't need to get emotional, I just know what I don't like.
If you think you can't stand someone or do not like a certain individual, then you should stop hanging out with them and just try to hang out with people that you like and interests you. I hope you do not make a big deal of making people feel bad by saying that they're annoying and confronting them about being full of themselves.