Feces that defy gravity and remain on your asshole when the majority falls into the bowel where it belongs. Not common, a cliffhanger will appear under the right circumstances (eating beans and watching Sylvester Stallone movies). Cliffhangers are similar to a stalactite in a cave.
Spotting a cliffhanger in the reflection of the toilet, I contract and expand my sphincter in an attempt to pinch it off. Once I realize those actions are futile, I take three sheets of tp, for 3x the protection, and un-mount the cliffhanger.