So it was just a casual night with my BF. We started making out on the couch and then he  started fingering me. One thing led to another and we started having sex. We had been talking about wanting to try anal but I didn't think anything of it. He asked me for consent to slip it up my butt. I really had to poop earlier that day but I didn't want to turn down a night of exploration. I agreed and it felt weird to me so he decided to pull out. As he pulled out, I felt like I had to poop and all my poop just splattered all over his dick. I didn't know what to say. He just laughed. Has this happened to any of you?