Just when he was thinking about going up to see what the two women of the house were up too, his mother called out to him from the landing. He stood up eagerly, wondering what this surprise they were talking about was. He headed for the stairs, excitement building as he climbed the stairs. From how his mother had said it, he knew he was going to like it. He walked into his mother's room and stopped dead. There stood his sister and mother in the sexiest combination of naughty schoolgirl and teacher he had ever seen. "So, I take it this is my surprise." he said, grinning widely and looking them both up and down. While he had been hesitant to eye his mother earlier, he couldn't help himself now, as his instant hard-on attested.