Cum Makes It Permanent

I find a potion that temporarily gives you a huge pregnant belly. After reading the warning that cumming during the change makes it permanent, I drink it anyway. My belly grows fast. I strip down, show off my new curves, and try not to touch myself... but the urge is too strong. I give in, cum hard, and realize the change is permanent. Now I'm stuck with this big, bloated body, craving ice cream