As Stan was making out with Adam, he had put his hand on Adam's cheek and felt some stubble from Adam not having shaved for a couple days. When Stan next took a breath, he said "I wish you let your beard grow out. I bet it would make you even sexier." No sooner had the wish been made when Adam's felt a tingling in his face. The tiny hairs already on his face lengthened and the color of deep red thickened and spread across Adam's face.
Stan pulled away surprised by what had happened. He was right, though, the beard did make Adam much sexier and rugged as he pulled his hand across the course facial hair. Stan looked back at Mario with a smirk, "I think I'm starting to understand."
He turned back to Adam then looked at Adam's smooth chest. "I also wish you had a thick coat of short chest hair, to go with that beard." Sure enough, Adam felt his chest tingle and itch. A couple tiny hairs poked out, starting around his nipples and the center of his chest. They thickened and lengthened over a few seconds. More hairs appeared, spreading out slowly. Adam watched in fascination at what was happening to his body. Stan and Mario smiled as they watched Adam's hair begin to cover his pecs in a layer of dark red fur. The hair spread to the base of his shoulders, down towards his pubes, creating a treasure trail leading down to Adam's still huge cock. The growth subsided and Stan ran his fingers through the manly hair he had wished for. "Hot," Stan muttered and resumed making out with Adam, satisfied with the changes. He periodically rubbed his face against Adam's new course beard, enjoying the rough texture while his hands rubbed Adam's chest, running through the softer chest hair.