Mommy can i have a band aid

Callie is big into band aids. Unsure why but she thinks she has a boo boo everywhere. Well yesterday after a huge melt down and threatening to go to bed at 6:30 she finally co-operated. Callie asked for a band aid and i thought maybe she'd put it on her knees or somewhere on her body that has a mark on it. Instead she put it on her mouth as if to say she was going to be quiet.