Oui, oui - je suis d'accord.
I've encountered this, both myself personally and being a witness.
I used to act like such a baby, whether it be for someone to talk to me, or just for the attention.
I am shy, so it's hard for me to really get my whole point across and to carry on a conversation - until I turn into that baby, then I can't shut my doggone mouth.
I have matured since then, I am quite different than I was. I am able to understand things a bit better.
I can be a know-it-all, I try not to be... but others think I am, when I think I'm not. Happens in real life, in my classes... "Show-off", "over acheiver", and many other names.
Heh, they're just jealous.