Janet slipped out of sight, leaning against the wall near the open door, her eyes closed. She was trembling badly, and her cunt was burning with a fierce heat that was strange, a heat she had not felt before. The crotch of her panties was soaked, and she could even feel her pussy juices slide slowly along her inner thighs. Her tits felt as if they were going to burst from her chest, and her nipples ached with stiffness. She wanted to move, to flee to her room, but her legs were wobbly. She was afraid if she moved now, she would fall. She listened to the heavy breathing of the twins then their soft words came to her.

"Next Monday, Barry said. "I get to fuck you next Monday, Shari! Are you looking forward to it as much as I am?"

"You know I am, Barry," Shari replied. "You know I've been wanting you to fuck me for a long time. I bet if Daddy wasn't dead, he'd say we could fuck now. Whats a few more days, anyway?"

"We promised," he said. "We promised Dad we wouldn't fuck until our birthday."

"It sure is hard to wait that long," Shari complained. "I like it when you use your finger in me, or my own fingers, but I wanna feel your hard cock in me awful bad!"

"Well, Monday is our birthday, and we're gonna fuck all night!" Barry promised. "And we'll fuck every day, too!"

Janet had not remembered the twin's birthday. So that was why they had to wait. Her ex-husband had known all the time, and they had promised him to wait until their birthday. But what else had they been doing? What had they been doing with their father? What had their father taught them, told them?

"Do you believe what he said about Mom?" Barry asked.

Janet held her breath, listening closely. "Sure, why would he tell us a lie like that?" Shari replied.

"I don't know," Barry answered. "But I think he was right. Mom hasn't said anything to us yet, and I'm always taking a piss with the door open."