Mark had pushed the button up enough times that Heidi now appeared to be a middle aged woman around 47. Her brown hair now showed signs of grey. Her clothes turned into something that their mom would wear. Mark then realized that Heidi was now way to old to be his sister. Thats when their mom walked in.

Hey sis thanks for letting me stay in your guest room while I am visiting said Heidi

I told you, I wont have my sister stay at one of those hotels near by said Mark's mom

It then hit, since Heidi was now too old to be his sister, she was now his aunt. Mark then decided to..