For the rest of the day Rainbow just ordered Dylan around for stupid stuff. Getting some water, making food, and other stuff like that.
It is now morning and Rainbow and Dylan both knew that it was the last day, Rainbow wanted to do something big so she left leaving Dylan at home. Dylan actually didn't want it to end, he liked it like this, and you can even say it turned him on when he was a pet or slave.
When Rainbow returned she said to Dylan, "Come on, I have a surprise for you."
Dylan got onto Rainbow who proceeded to take him down to Sweet Apple Acres, Dylan didn't see anypony there. Rainbow opened the barn door for Dylan who then walked in, seeing a rope tied to a hook on the ceiling.
Rainbow walked in and to the rope, "Come over here Dylan," Rainbow commanded.
Dylan did what he was told, Rainbow took Dylan's hind legs and tied them up to the ceiling. Rainbow grabbed another rope and tied Dylan's forelegs behind his back, also tying his wings together.
As the blood rushed to his head Dylan wondered what Rainbow was planning for him. Rainbow took off her clothes then ripped off Dylan's clothing then started sucking him while she was flying.
After getting him hard Rainbow stopped and commanded Dylan "Start licking," she yelled.
As Rainbow continued what she was doing, Dylan listened to his orders and began licking his Master. As Rainbow started tasting pre-cum from Dylan she stopped and asked, "You're not done yet are you?"
"Well, I-," Dylan managed to get out before Rainbow interrupted him.
"Looks like I'm gonna need reinforcements," Rainbow Dash whistled and Big Mac walked in, naked and hard.
Dylan's eyes went wide while seeing Big Macintosh walk up to him. Rainbow flew up a little higher and put Dylan into her.
While Big Mac stuck himself into Dylan's muzzle. As Big Mac started thrusting himself into Dylan's mouth making him deep throat, Rainbow too was moving on Dylan, every now and again licking his rear.
Only a few seconds in from there Dylan couldn't bear it anymore as he came into Rainbow Dash, she didn't stop, she just moved faster.
Both Rainbow and Big Mac started moving a lot faster, Dylan even licking Big Macs tip when he pulled away.
Rainbow stuffed her muzzle into Dylan's rear as much as she can, licking as deep as she could. Dylan and Rainbow knew they couldn't last much longer.
Big Mac had no intention of slowing down as he just continued to sped up, going faster and faster, deeper and deeper, into Dylan's throat.
Rainbow and Dylan tried their best to hold, but couldn't, as Rainbow released her mare juices onto Dylan's crotch as it shot out his seed.
Rainbow removed herself from around Dylan as the mixture of the cum dripped onto Big Macs muzzle as he licked it off, tasting the rare tastes of both Dylan and Rainbow.
Big Mac, after tasting the cum, proceeded to release a large amount of his own seed into Dylan's throat, who even though he was upside-down, still swallowed the gallons of cum Big Mac released in to his throat.
Big Mac removed himself from Dylan and started to masturbate. Dylan opened his mouth as the remainder of Big Macs seed shot into his mouth, Dylan proceeded to swallow the remainder of the cum.
Big Mac left the barn knowing he fulfilled what Rainbow asked him to do. Rainbow removed Dylan from the rope from the ceiling and removed the rope around his forelegs and wings. They laid down next to each other feeling each other's body warmth.
Hearing nothing but the breathing of each other and the fast pace beating of their hearts.
"You know Master…" Dylan started saying.
"What Dylan?" Rainbow asked.
"You don't have to win a bet to make me do this, if you want me to be your pet or slave like this," Dylan pointed at his collar, "I'm fine with it, I actually like it," he went next to Rainbow's ear and whispered "it turns me on."
Moments later they both fell asleep, snuggling up with each other in the barn. Their bodily fluids on the floor next to him, including some of Big Macs.
Even though it was the middle of the day, the both of them were exhausted from what just happened.
Hours later the both of them woke up to the barn door opening. When their vision got clear they saw the Stetson wearing Earth pony saying "What the hay happened in here?"
Rainbow and Dylan didn't know how to responded, they were naked, there was cum on the floor, and they were in a place they probably shouldn't have been. They knew they were in trouble.
