Mike's eyes were as wide as they could get as his eldest sister pressed his twin's leg nearly straight up. Emma had always been flexible, but this was ridiculous. Emma had one leg on the floor, her back on the wall and the one leg in Sarah's grasp was pushed nearly straight up resting against their eldest sister's shoulder. Sarah was leaning in close, her mouth just inches from Emma's. "Other leg?" she asked, breaking Mike from his trance. He swallowed and rewet his lips. His eyes grew wide again as Emma switched legs, bringing the other one up. Mike couldn't help but look at his twin's crotch. He could see her underwear peek out from the side of her shorts. Tiny hairs were peeking out from the side and he could make out the lines of her p***y as the fabric pressed tightly against her.

