Image imported from derpibooru 
Original Description:
 
A personal piece based on a fun idea I had of three helpless ponies bound in such a way where they face each other as their feet are mercilessly tickle tortured below them.
 
And there’s no better trio for such cruel captivity then the young adult cutie mark crusaders.
 
Their feet enlarged and deeply sensitized day in and day out. Exposed to endless teases and torments to eek ticklish mirth and over-stimulated pleasure from all the pedal attentions.
 
I hope you all enjoy it! :D