To think everyone has some mean girl in them?

[StillNoSense]

I'm a victim of mean girls, have been at school and later on in life.

Sometimes though I think mean things about them and about other people though I don't do anything about it, I don't treat them mean. I might just think they are annoying or that colour doesn't do anything for them or I just don't like them but I'd never verbalise it.

AIBU thinking that everybody does this to some degree however small and to say they don't is disingenuous,

WWYD
My DD (9) is having a birthday party soon. There is one girl at school she spends a lot of time with, not always entirely out of choice. After some discussion she did invite her but they seem to have had arguments everyday since. DD has come out of school every day this week asking me to uninvite her and say we got the numbers wrong and there isn't enough spaces. She thinks she will cause an argument and ruin her party. I don't feel uninviting her will work and isn't very kind but also don't want DD to have her birthday party ruined or be stressed out about it for the whole run up to it.
So WWYD??

Everyone can be judgemental or unkind.
Honestly I think this behaviour is worsened by a persons unhappiness or insecurities.

If I find myself thinking in unkind terms I honestly know somethings up with me.

Totally agree with this.
Looking at other people and thinking they look terrible,overweight,ugly is a reflection of your own self esteem and your feelings about yourself.
Mean girls/ Bullies actually hate themselves but it's unbearable so they dump it onto others,usually people they are jealous of or people who are different.

There are people I dislike but I give them little of my time or energy, polite if absolutely necessary but I barely think about them let alone think mean things about them.

I think your question needs a thread of its own, I am sure people will be happy to discuss!

Yes realised I had posted in the wrong place after posting it and can't figure out how to delete it!

We wouldn't be human if we didn't have those thoughts at times.
I'm sure the nicest, calmest people even do. People will and do annoy us.

Looking at other people and thinking they look terrible,overweight,ugly is a reflection of your own self esteem and your feelings about yourself.

Eh?

If I see someone and think they are wearing a really unflattering outfit and look terrible, how is that a reflection of my feelings about myself?

It's not, I agree. It's just an observation. If you acted upon it and said something horrible then that would be different.

Because you are comparing them to you unconsciously.
It's a terrible misogynistic habit as its mostly done about women.
Too big, too thin, unflattering, not good enough,look terrible
By your standards which makes it your problem

Nope. It’s just an unappealing sight, same as decor or artwork I don’t like. Not comparing them to me, just don’t like the way it looks.

Would absolutely think the same about men with a horrible outfit/ nasty tattoos / beer gut

Absolutely accept this makes me judgy but definitely don’t accept it’s all about my self esteem.

I'm not sure that's what a "mean girl" is tbh.

I would say yes. I tend not to say it but God I'm thinking it. It's Friday so here's a meme.

Of course you wouldn't but if you were a secure, happy person you wouldn't need to nitpick and sneer at others.
Terrible habit.
You can deny it all you like but ask any counsellor or psychologist

Jeez, it’s not nitpicking or sneering to think someone looks bad in an outfit.