A piece of feces that dangles from your anus when you're trying to deficate. Oftentimes one must rapidly shake their anus in order to dislodge the offending fecal matter. The word Shilactite is a combination of the word "Shit" and the word "Stilactite". A Stilactite is a calcium carbonate deposit hanging from the roof of a cave that resembles an icicle.
Man, I couldn't dislodge the shilactite I had earlier, so I wiped anyways and I ended up with an assberg. (see assberg)