Laconic / Cupcakes

A My Little Pony: Friendship Is Magic Dark Fic where Pinkie Pie is an Ax-Crazy psycho, who tortures and kills other characters and makes cupcakes from them.
Visit unabridged version HERE. Just make sure you haven't just eaten. You'll thank us.

http://tvtropes.org/pmwiki/pmwiki.php/Laconic/Cupcakes