Who Am I?

"I'm far too loud; it's like, as soon as I've got an opinion it just has to come out. I laugh at stupid things just 'cause they tickle me. Sometimes I wish I was like __________. She got some prittstick and she glued her lips together, so she never had to speak..."
"...But by then it's too late, no one wants to know me." Does anyone else feel like no one around them knows anything about them except for a few shallow things? Isn't it scary once you realize that no one at all really knows who yo...