I know it's weird
When we are alone, my boyfriend likes to wear these really tight elastic boxers only. He then turns his back to me and poops. I can see the slowly forming bulge at the backof his boxers. I then give him a slight slap on his but which greatly arouses him. He then pulls down the front of his boxers to release his hardened manhood and we have sex then and there, with poop still fresh in his pants.