What does 15f middle schooler looking for moots mean?? Everyone is going crazy over it

15 years old female middle schooler looking for mutuals(online friends)



Also this part is spoiler so please be careful whether you want to be spoiled




Abfd is mentally 15 y/o

15 yr old female middle schooler looking for friends basically

Ohhhh, ok. That makes more sense now, I thought of something completely different when I read that and I was so confused when I saw everyone's reactions in the comment section