not using a condom and leaving semen inside a rectum will apparently cause diarrhea, so perhaps that line is referring to that.
I’d say you never read much bl then, because it’s pretty common thing to happen specifically with anal sx when their partner releases it inside. That’s why aftercare is important, and condom should be used always. Reading through forums and blogs, it says here that stomachache after anal is natural (i dont have any personal experience) due to trapped gas caused by movement in sx. Also, depending on how prepared the bottom is, and also the hygiene of both parties, can also affect the bacteria that can cause cramps and muscle spasms
that's crazy, had my fair share of men visiting my backdoor unprotected, and never had that problem. someone gotta tell these bottoms about psyllium
Well, men in bl come like they have unlimited juice so maybe that’s why
what does the top mean about "complaining that your stomach hurts"???? is this a thing where people assume that being jizzed inside of = stomach ache???? like i know of the "i can feel the cum spreading inside me" trope (which is erotic, but not really a thing) but I have never heard of cum induced stomach aches