D&D: Take him into his mother's room and tell her about this - with naughty intent.
From Create Your Own Story
You bite your lip and glance at the cracked door as a naughty plan coalesces in your head. You aren't sure after exhausting yourself with your magical display, but you think you have enough left in you for one charm spell potent enough to make Eildiara particularly suggestible. "Well young man," you say in a mock authoritative tone, "I tried to be nice last time, but this time calls for more decisive action. You wait right here. I'm going to go tell your mother!"
"No!" Peter mouths desperately. But, knowing he's in for it now, he obeys.
You very quietly step into the room. Eildiana is sleeping soundly. You muster the charm spell as best you can and cast it on her. She stirs. You step in to shake her awake. "Talenei...?" she asks, rolling onto her back and sitting up. She clutches the sheet to her chest, and you notice she's dressed in little more than a flimsy shift.
"I caught your boy peeping on you again," you say.
"Oh no..." Eildiana sighs. "Lemme put something on and I'll talk to him."
"You don't have to put anything else on," you say. You have to know of the spell worked.
"Oh... well, okay," Eildiana responds. You smile. She's under your influence now. Not a mindless slave, but simply open-minded and suggestible. She stands and beckons Peter into the room. He paces in slowly, looking at the two curvy women before him. He's surprised his mother would were nothing but her super-short nearly transparent shift. You can't help but look either - you can't see fine details, but you can see where her little pink nipples stand out darker against the fabric, and it's obvious she's not wearing any panties. "Baby..." she says, walking to her boy and running a hand through his hair. "I wish I knew why you were doing this. I'll do whatever I can to help you, if you'd just tell me why."
Peter looks at his mother, then at you. You wink at him, nodding reassuringly towards Eildiana. He gives you a quizzical look. You mouth the words "tell her", a hint he finally gets. "I, uh..." he stammers nervously. "I think you're really really pretty. I want to see you naked. I think about it so much, and every time I do, I get hard."
"Oh... oh wow. Baby, I don't think..." she starts, but you slip behind her and place your hands on her hips.
"He's your son," you whisper sensually into her ear. "It seems wrong, but think about it. You're his mother. You should help him with whatever problem he has, right? You should do everything you can for your sweet boy."
Eildiana nods. "Peter..." she says, slipping the thin straps off her shoulders and letting the thin garment slip to the floor. The boy stares wide-eyed at his mother's nudity - her shapely legs, round hips, shaven pussy, adorable little belly pudge, big tits peaked with small pink nipples. You giggle at the boy's slack-jawed gaze, his solid cock plainly evident inside his trousers. "Mommy will do anything to help you, baby. What do you want now?"
Disperse your own illusory clothes and give Peter a show.
