Sunset, Twilight, and Wallflower Get Bucked Senseless!

Sunset and Twilight do a little experiment on Flash Sentry, making him horse-like.

Sunset Shimmer misses Equestria, and with help from Twilight Sparkle and Wallflower Blush decides to do an experiment on Flash Sentry; giving him a horsecock and taking pills that enable them to simulate estrus.

All characters are 18 or older.