For a fat man it doesnot matter what type of body is suitable always. What matters is his dick size and the girls pussy depth.
On usual cases, if she is slim, the best positions are she is on top. If she is fat, then the position should be, she on the edge of the bed, he gets on feet, spread and insert.
Just avoid one thing, a fat guy should not go in missionary with weight on a petite girl.
If he has a small dik, woman on top is better. else the other.
So Tamil kid, you are not only a kid, you got a fat belly too? Interesting. You should meet Deepika to know how to write garbage replies.