They fall for it

"What? Where?" Clair yelped, looking up. Brock notuced Whitney look up as well.

Grinning, Brock used his left hand to grope Clair, and his right to grope Whitney. He saw the two women's eyes become spirals.

"Okay, first and foremost, if I ever tell you to look in a direction, you will look in that direction and keep looking there until I grope you."

"Okay." both women said in monotone.

"Now," Brock said, rubbing his hands together. "I want to have fun with you. Whitney, whenever I twist your left nipple, you will become my horny Miltank in heat. If I twist your right nipple, you will go back to normal. Oh, but if you are near people and I twist your left nipple, you won't become my Miltank until we are somewhere private."

That would keep him from drawing suspicion.

"As for you, Clair," Brock said. "When I twist your left nipple, you will become totally obsessed with me, to the point of worship. When I twist your right nipple, you will go back to normal."

That was good for now, Brock had other hotties to visit. He woke both women up and decided to play with their new triggers.