Daddy was putting Tessa to bed last night and he noticed that inside her baby doll's mouth was a piece of Styrofoam. It is one of the baby dolls that comes with a bottle so that the doll's mouth is always in the position to drink the bottle.
Daddy: Why is there Styrofoam in Dolly's mouth?
Tessa: So flies don't get in there. You told me that if you leave your mouth open too long you will get flies in there.
Daddy: I guess I did, a long time ago.