You used to hate strawberries, but now that you're older, you've come to love them. And the strawberries look delicious. Usually it's almost impossible to pick a carton of strawberries where they all look good, but that's not the case here. Every carton is perfect.
The sign says something about them being perfect for couples trying to conceive, but you don't read any more than that and the price, which is very affordable. If you had read the sign, you probably would have moved on. But you didn't, so you buy a carton.
When you get home, you decide to dig into the strawberries right away. They go bad so fast, after all. You wash a handful and sit down at the table. The moment you swallow your first bite, your body changes. Your penis and balls morph into a uterus and vagina, your pecs become large breasts, and your flat ass grows to give you an hourglass figure. Even your hair grows and your face softens to become more feminine.
You've become a woman. But the worst part is what the sign had warned. Anyone who eats the strawberries becomes a pregnant woman, and however many strawberries she eats determines how many months she is. Before you stopped due to the transformation, you had eaten...