(Watersports, Gay, Belly Inflation)
Big Mac and Emerald Flash laughed as they watched the movie. The credits rolled on and Big Mac turned on the lights and turned off the TV. "I'll be right back. I have to go to the bathroom. I had way to much water today." Emerald Flash stood quicky as Big Mac started to walk away. He was already getting hard from what he was thinking.
"Wait!" Big Mac turned around. He saw Emerald horse cock hard underneath him and started getting hard himself. "Uh... Do you like watersports?"
"Eeyup!"
"Oh, phew." Emerald smiled, turning around and bending over. He moved his tail to the side, looking back at Bic Mac. "How Big are you Big Mac?"
"18 inches."
"Ha, they don't call you big for nothing, do they." Big Mac mounted Emerald, his gigantic horse cock pushing slowly into Emerald's ass. Once he got about 4 inches in, he started to release his urine. Emerald Flash moaned loudly in pleasure, his stomach expanding ever so slightly as he was filled more and more with urine. Some leaked out but not a lot. Big Mac's cock was so big it couldn't squeeze out so Emerald's stomach expanded.
After a minute or so, Big Mac slowly stopped urinating. He slowly pulled out, his horse cock flopping down as he unmounted Emerald. Piss poured out all over the floor. After most of the piss finished water falling onto the ground, Emerald and Big Mac took a walk into the apple trees.
Emerald smiled, lust still in his eyes. He wanted more. He put his front hooves on a tree, then lifting his tail, crouching a little so his ass stuck out. Big Mac mounted him, putting his front hooves on the tree as well. He slammed his cock in and Emerald screech in pleasure. Big Mac humped him has hard as he could, grunting with the effort. His gigantic balls slapped Emerald's.
Emerald came on the tree, his head thrown back in pleasure. Big Mac started to cum, shooting hot, sticky, huge loads into Emerald. Emerald never knew a pony could cum so much! His belly started to expand again, this time more than before. Big Mac kept cumming, but soon stopped.
Big Mac pulled out of Emerald's destroyed ass, cum pouring out and onto the grass. It made a huge pile. He came enough to fill a bucket! Emerald got out of the position, sitting down in the puddle of cum. After he caught his breath, he stood. They walked back, trying to decide what movie to watch next. Emerald walked funny the rest of the night.
