LinusWho are you mailing a letter to, Charlie Brown? Charlie BrownI have written an invitation to Heather, the little red-haired girl. I was afraid to call her. It’s too late to mail it, so I thought I would take it to her house, but I’m worried. LinusWhy? All you have to do is slip the letter into the mail slot in the front door of her house. Charlie BrownBut what if my hand gets caught in the mail slot and someone opens the door? LinusThat’s ridiculous, Charlie Brown. You worry about the most