Twilight Sparkle and the Rock Monster

Twilight Sparkle and the Rock Monster is a story in jakkid166's My Little Pony Series. Written specifically for a contest for stories ending with a pun, it takes place during The Fall of Detective jakkid166 and focuses on Twilight Sparkle as she creates a friend for Spike out of rocks and the shenanigans that follow.

Summary
The story starts off with Twilight attempting to watch a movie with Spike, who starts to complain about being constantly bored. Concerned, Twilight goes down to her basement and (illegally) constructs a monster out of rocks named Rocko. After being brought to life, Rocko quickly becomes friends with Spike, but is soon angered after Spike takes him to watch a movie about a rock monster killing ponies. Rocko is so taken aback by this depiction that he instantly becomes vengeful and starts destroying Ponyville, and Spike is forced to go back home and get Twilight and the others to help.

The six show up, and manage to defeat him by planting C4 on his legs and detonating it with a cell phone, though not before accidentally turning Rainbow Dash into stone. Twilight spanks Rocko on the butt before being scolded by Rarity for breaking the law, leading to Twilight remarking that she "hit rock bottom".

Trivia

 * This is the first story in the My Little Pony Series to not feature Detective Jakkid166 at all, though he is mentioned by one of the ponies at one point.
 * Out of the dozens of stories submitted to the contest, this one fell in dead last.