Sewer Yam

1. A fat turd which is tapered at both ends resembling the shape, color, and texture of a steamed yam or sweet potato.

2. Butt fruit so massive that it chokes your toilet bowl.

His chili hole was stretched to its limits by the immense sewer yam which he gently coaxed from his bowels! Thankfully, the tapers prevented his butt from slamming shut.