The situation in the hot tubs was too close for comfort. Though you had escaped the jaws of certain doom the same could not be said about your co-worker who was now churning away in the belly of Pinkie Pie. Aloe and Lotus, the owners of the spa, were fine with their human staff doubling as pony food and you had made a habit of dodging the unpredictable appetites of the voracious patrons by essentially doubling up on another human and using them as a human meat shield; figuratively and literally.
 
Today was different, today was a challenge. With no sacrificial lamb and the other human staff on their own work orders you went to the next task asked of you. A supply run to the massage parlor, a regular needs additonal towels. With your cart of supplies you slink through the halls passing rooms with ponies enjoying their day at spa; soon you come to the room and balk, the regular was a unicorn. Laying across a fluffy futon you see three humans massaging the mare, her plump figure was a telling sign that many of your kind now rested on her thighs.
 
“Most excellent gentlemen,” Rarity purred “Your hands are small but those digits are certainly a marvel,”
 
Your co-workers noticed your presence, one mouthing the words ‘help us’ while kneading the soft flesh of her hips.  
You hadn’t been noticed…yet. The mare sighed and moaned in contentment, squirming under the ministrations of your co-workers their hands smooshing, rubbing, pressing on every inch of white coat presented to them. You silently refilled the various sundries in the room, listening to the sounds of pleasure before getting your cart and rolling it silently to the door when the mare spoke once more.
 
“Oh! I should probably mention, I purchased one of you for my…personal use. Which one, I won’t say but you’ll find out soon enough,” Rarity said, her tail brushing underneath the chin of the one massaging her hooves.