It's an interesting fantasy to paint such a fat ass green! Ladies with such an ass are especially good in the crawl position, a boner is assured. Except you have to have a decent length tool. If you don't have one, I recommend laying the lady on her back and fucking her with your hands on her thighs pressed up against her belly. Otherwise you can't get the dick in deep.
When my daughter has naughty conversations with her father, encouraging him in every possible way to fuck her, it is almost impossible to keep within the bounds of propriety. And she promises him pubes like her mother's. So when she took his dick in her mouth, he quickly relented. And soon poured his cum all over her sweet little bud. Cool theme.