Rainbow Blitz walks in on Duskshine and Applejack doing the nasty in the barn. Dusk locks himself in the library for three days, and when he finally comes out, he has a little surprise in store for Rainbow Blitz, involving a unique milking machine he built especially for him.
NOTE: This story contains gay bondage, felching, and extensive technophilia, with some mild violence. Not intended for those under the age of 18, or with hypochondriacal arrhythmia.

EDIT: Changed the description a bit. After reading it again, I realized it wasn't quite descriptive enough. Go figure.