Firstly, cream puff? LMAO.
Secondly, if you mean the semen would somehow get through that LONG intesting TWISTING in ALL directions into the stomach to upset it - would be impossible. People swallow semen but there seems to be no such trope? Online it says "Semen is made up of the same harmless nutrients, minerals, and sugars that you probably eat every day—stuff like vitamin C, potassium, calcium, and fructose. (Sperm cells actually account for a very small portion of semen.) Still, it can't replace your peanut butter protein shake: A man only produces about a teaspoon of semen per orgasm, and that's not nearly enough to provide any health benefits—even if you're getting it daily. But it also doesn't contain any seriously foreign ingredients, and your body digests it like any other sustenance you eat."
So I still don't get it.
Where does the trope of having an upset stomach when a guy comes in your ass come from? Is it true, I cant find anything about it? Where did it start?