Mrs Cake was by no means a great swimmer, especially compared to Pinkie’s friends. This fact hit close to home when she awoke one night to find herself in a room, stripped naked, with a hole filled with water on the other end. She checked her chubby form for any damage, finding herself unharmed, but her attention drew to a strange note on the floor, with a single word scrawled on it; ‘SWIM’.
 
Looking at the hole, she noticed that it lead into an underwater tunnel of some sorts. The large, nervous mare fretted on what she had to do. There was no other way out of the room, and no matter how much she banged on the walls and shouted, there was simply no reply. Having no other options, she lowered herself into the water slowly, and started taking some breaths and practice submerges before resurfacing. With a final, deep breath, the mother ducked under the surface and kicked off into the tunnel, breast stroking her way into the tunnel.
 
The water seemed relatively clear and the tunnel well lit, made from a durable steel as Cup Cake examined her surroundings. She continued to swim further and further into the tunnel, swimming into the blue, foggy distance. She could no longer see the entrance where she dove from, and even hesitated to go back and get a breath. Cup shook her head, needing to press on with increasing urgency.
 
Her kicks were somewhat strong, but the mare was quite inexperienced overall in swimming underwater, not making much progress as she kicked on, her breasts flapping and bobbing in the cold water as her nipples stood erect, her belly and thick thighs wobbling in the quiet waters, only the sound of her frequent exhales filling the calm, chilling void. “Mmgbl… nnglup…”
 
Cup didn’t know how much time had passed, but her lungs grew increasingly sore the further she swam, her body tiring from the constant breast stroking. She was clearly pushing past her limits, her legs kicking as she used her arms to push forward, her cheeks puffing to keep her air in. “Hrrgblblb!”
 
The old mare wasn’t a quitter however, she continued to swim on, her vision blurring, a hand covering her puffed cheeks. She cursed her unfit form for not being able to keep her going, unsure if she would be able to keep going, as the tunnel seemed to stretch on forever. She wasn’t sure how much longer she would last, but it wouldn’t be long now. She would clearly drown in these unknown tunnels as her mind thought of her family and how much she’ll miss them.
 
Mrs Cake was clearly out of her league.
 

 
Commission by ByondRAGE