As I said, a friend of my sister-in-law experienced this - or rather brought it on himself. It was his honeymoon night and his bride had taken to the bathroom to have a shower after the long events of the day. He was to wait in bed for her to arrive for "the big event."
Now, he was always the class clown, and that was a huge part of his personality that drew this girl to him in the first place. He could be crazy for a laugh. This night was no exception. As he lay in wait, he felt that familiar feeling in his gut and a curious thought occurred to him that was too tempting of a thread for him not to pull.
He decided it was a good idea back up his bare backside to the gap at the bottom of the bathroom door to box the scent of his flatulant in the bathroom where his bride could bask in the glory of his aroma. He angled himself at the pose necessary and with a grin from ear to ear let it rip. As he pushed, he realized that this was not just gas. He Had in fact evacuated his bowels, making a terrible mess of the Bed & Breakfasts' bathroom adjacent carpet, and spilling over on to the bathroom tile. His wife, drawn to the strange noise from the other side of the door, saw the the events unfold and was indeed boxed in with an unpleasant aroma.
The class clown who had never blushed in his life was beat red as his bride opened the door to rush out. Mood killing aside, in the end they shared a laugh as big as the mess he had made.