Sister's best friend

You are sitting on the deck of your house. Your sister and her friend are giggling upstairs while you are reading a book and looking across the backyards at the hot milf neighbor of yours sunbathing. Suddenly you hear your sister gasp and tell her friend "I'm going to be late for gymnastics!". You hear her run downstairs. The glass door slides open. "Hey, can you bring Stephanie home? I have to go to gymnastics."