Family Ties/Expose yourself to your son.
"Timmy, sweetie," you whisper. "I know what you've been doing."
"What?" he asks, the picture of innocence.
"You've been trying to peek at mommy's boobies." You bring a finger up and playfully tap one through your open blouse.
He shakes his head, exaggerating the "no." They're so cute when they don't know how to deceive.
"I've seen you, angel," you say. "Mommy knows. Mommy knows what you want. But you've got to keep it between us. You will keep it between us, won't you?"
He nods, dumbly. He's completely under your spell, and doesn't dare speak for fear of breaking it. With a twitch of your hand, you undo another button, and pull open the blouse just a tad. With another twitch, the buttons are all open, and your cleavage is before him. Grasping both sides of the blouse, you twirl in front of him, flashing your breasts completely. Smiling wickedly, you twirl again the other way, again giving him a second's full flash. And then, facing him full on, you pull the shirt open entirely, exposing your splendid, swelling breasts to his hungry young eyes.
He stands, open-mouthed, and his little boy's cock is straining at his shorts. A world of wonder has just opened before him.
You can't stand another moment's wait. "Take off your shorts, love." He pauses a moment - then hustles to do your bidding. Bouncing down on the bed, he pulls them off, so that he lies there naked.
What to do?