Hello everyone, hope you all are doing good. It's a bit weirdo thought of mine which I used to believe when I was a kid along with this I'm too participating in #weekendexperiences contest, 
So, in my childhood when my parents started offering me fruits when I started to grow, fruits obviously have seeds in them and I also knew that from a seed a fruit grows I started eating the seeds as well along the fruits especially of watermelon since they are most likely to swallow and used to think that a tree will grow in my stomach and all those experiments which kids do.
How this idea initially started...
As being a child of a good enough age that you know that from a seed a plant grow, one day one of my aunt offered me fruits and told me that don't eat the seed as well otherwise a tree will grow in your stomach because she didn't deseed it and she told me this because something seeds are stuck in your throat and that's a great problem but explaining all this to a child is quite complicated but you just make them afraid about this seed and tree relation and except my aunt two three more people told me about this.
Me being an inquisitive and curious kid tried it with various fruits in thought that if one don't have the quality of growing a tree in my stomach the other would have.
But then gradually I came to know about the entire theory and understood everything...
Thankyou!
Images are mine..