You dig into the box, and pulled out an idol that was of a shemale person that had muscles all over its body. You weren't sure why the box had an idol that looked like that, but it might be interesting to look at. "Oh, that one was the first idol they brought home," your girlfriend explains. "Let's see what happens."
Your girlfriend grabs the idol from you, and starts rubbing the emerald like stone in the middle of its chest. Not sure why the idol would be shaped like a muscular shemale, but it must be representing all genders who would gain muscle. After rubbing the gemstone on the bodybuilder's chest, she felt a muscle expand on her arm. The muscles increased with the rest of her arm once she stopped rubbing, and did the same to her other arm as she felt her shirt getting destroyed.