I love making women shit during sex
Several times I have gotten women I'm fucking, either anally or while rough vaginal, to be on the edge of orgasm when my perversity and power dominance kicks in and I trigger them to loose control unwillingly of their bowel.
while I am not into scat and their actual shit fairly repulses me, I never outright humiliate them while we clean up as they apologize and nearly cry, but internally im reveling in their embarrassment and horror of messing during their orgasm, knowing I've made them decide if they could realize in time between not cumming and saying they have to shit, or to ride it out as its too late.
my favorite was when in high school I fucked my GF best friend while we were broke up at the time, and as she was nearing orgasm as I was fucking her ass in her bed and she was buzzing her clit, I felt she wasn't empty so I pulled out further and further like plungering her until I pounded her ass hard to get her over edge, and as I was a moment from cumming, I smelled it, held her and mad sure to cum deep in her now messy ass, grabbed a towel and cleaned off quickly, saw her brother was coming home, smacked a clean part of her ass said she should shower now Jeff was parking, and ran out the back. as I showered when I got home, she called upset and apologizing,not to tell anyone etc...i lied and no worries, it happens, her friend had on a few occasions too but shh, I'd still fuck her no problem.
got back with GF week later, and they never talked again.
Why don’t you just stick your dick in a pile of shit. It would save a lot of GF headaches.