Mark Sabine first became a YTP source in the YTP 007 Skyfoogle , by talented Michael Rosen pooper DylanCliff111, on April 26, 2013, 4 days after the marmalade video was uploaded. He used the "Marmalade" video and initially expected it to spread as a YTP source. It didn't gain much attention until later that year in around October, when many other poopers specialising in Michael Rosen noticed the source and tried it for themselves. All four videos featuring Mark were eventually used and his character remains as more than a mere fad to this day. Mark himself did notice the videos made by DylanCliff111 and told him via Facebook that he enjoyed them. Conversely, Sabine discourages his students from searching for poops, but acknowledges their existence with good humor.