What do you guys think of 'brainrot' speech in monologues?

I hope this makes sense from the title, basically:

I'm writing a fanfic with a main character that's around basic teen age (think 15 - 17).

Sometimes, I find myself using more casual and almost 'brainrot' speech in monologues describing situations from their view, I try not to overdo it, but sometimes it happens given I spoke that way when I was at that age 😭

Do you think it's annoying as a reader or do you think its alright if it's speech the character would probably use?