Isabelle opened the door and found Jake there, naked with a towel in front of his wiener. He was looking away because Isabelle was naked too, not that he hasn't seen her like this before.
"What's going on here?" She yelled.
He looked up and his eyes widened, the towel did nothing as his penis grew bigger and became fully erect, nearly half a foot long and two inches wide. Now that she noticed more she saw more muscle definition on him.
"I can explain!" He stammered "This ring makes me grow when I lie!"
"And you haven't lied before this?"
"Of course not!"
Suddenly his penis grew longer till the towel fell off, revealing the large package underneath. His skin got tighter until his muscles were more noticeable, he even got slightly taller.
"Okay that's a good excuse" Isabelle said, "I can't imagine if that happened to me"
Suddenly Isabelle grew in height only slightly. Her B cup boobs grew to around a double D cup. Not to mention her vagina now looked like it would fit Jake's package deal perfectly.
"Wow!" Isabelle said "That was interesting."
Jake wasn't hearing hedge proceeded to pick her up and carry her to the bed and lay down, his penis was at least a foot long as he was very hard. After about an hour things got interesting.
"You need to get bigger!" Jake said to Isabelle.
"Alright," She said "I am not having a good time!"
Isabelle grew breasts so big she couldn't see her stomach. And her levels of sexiness went up tremendously.