You're visiting the gym with your new girlfriend and run into your FAR more glamorous ex- who giggles at the sight of you and informs you that she's discovered a fantastic new ability! Every time she makes a man cum, she grows both physically stronger AND bustier- which explains her incredible figure! She tells you- and your reluctant girlfriend- about all her conquests that led her to gain the incredible figure she has now, explaining how easy it is to get any man to cum on command now, gaining superhero-like strength and beauty. Finally, she decides to have some fun by making you cum right in front of your girlfriend, so hard that your vision begins to fade- until your ex finally leaves in triumph.