I had a feeling that was coming. Anyway..
When I was a junior in high school, I got my first shot at anal with my girlfriend. We had anal probably about 2-3 times before this and decided yeah lets have some anal sex tonight, sure why not? So here I am railing my girlfriend in her ass standing doggy style, with her over my bed, feeling good, lasting long, and overall just enjoying the hershey highway. My parents were usually home when we were fucking, but never decided to bother us until of course this rare time I'm banging my girl in her ass. So of course my mother decides to not even knock and just straight up open the door... and as my mother screamed "Oh my God!" And as I'm yelling "Mom, get the fuck out!" I suddenly heard a loud fart as my girlfriend dove into my bed sheets. As I recollected myself, I realized an awful smell was lingering, and of course, yes, my girlfriend shit. It wasn't just a shit though, it was a spray shit, complete with lube, all over my leg and down my foot. My girlfriend had also shit on the floor, and on herself, and gotten some of it on my bedsheets as she dove into my bed. I then decided it was best my girlfriend went home, as I spent the rest of the night cleaning my room from the shit stains she left everywhere. That was the last time I ever had anal sex with that girl.
Maybe not embarrassing for me, but when your room smells like shit for a week straight and your girlfriend comes over to visit within that week, and the smell is still there, its a pretty fucking awkward time.