Egyptians! Greeks! Norse! Oh my! (A guide to myths)

Norse; Loki deserves a baby shower

You know, Loki has some messed up kids. Heck, two are destined to cause Ragnorok to happen, the end of the Norse gods! But anyway, let's talk about one of his calm kids. Sleipnir. There isn't much to research, heck, it pretty much said the same thing for every book I found, but there's one full version of the story so hear we go!
 
So there was a giant that was tasked with building a wall around Asgard to protect them from enemy attacks. The giant said he could in three seasons, but he would receive the sun, moon, and the goddess Freya in return. The gods had a council meeting to decide if they should.

    Odin looks over at Freya, "Freya, you wouldn't min-?"

"Never," She interrupted.

"Yeah I thought so, anyone else have a plan?" Odin asked.

                  Everyone shook their head. Well, everyone except Loki. He raised his hand, " How 'bout we have him start at the beginning of Winter and have him complete the wall before the end? He'll take longer since it'll be cold. We'll even let him use his horse."

                His plan seemed foolproof, so they told the conditions to the giant who gladly excepted the challenge, and off to work he went.

                So while the gods and goddesses relaxed and thought to themselves, there's no way he'll finish in time, the giant managed to build the wall rather quickly. His horse would look for and carry large bricks or boulders that the giant would stack together, the perfect relationship between master and horse.

                As the days went by the wall was looking close to finished and everyone started to panic, especially Loki, since it was his idea.

         "LLLLLOOOOOOOOKKKKKKKKKIIIIII!" Odin shouted as they piled into his room. I'm in trouble, Loki thought to himself.

          "You're 'foolproof plan' is failing and the end of Winter's tomorrow! If you don't find a way to stop him, you're going to pay huge consequences," Odin threatened.

           After this, Loki is definitely scared for his life and dashes off to mess with the giant. Huh, the giant's male horse is amazing...it would be a shame if something, distracted it, he thought as he shape-shifted into a mare.

            He put himself in the horse's view a few yards away and started to walk around doing horse things. While the horse looked for materials, it caught sight of the disguised Loki and fell head over heels (or should I say hooves) and completely stopped what he was doing.

             The horse chased Loki the whole night, the giant right behind him trying to get his helper back. As the night went on, the giant realized he would never have enough time to complete the wall.

               Dawn broke and the wall remained incomplete and the giant never got his horse back. The gods took pity on him, and by that I mean they let Thor smack him in the head with his hammer and broke him to a million tiny pieces (Poor guy).

              And what happened to Loki? Well, let's just say nine months past and he returned with an eight-legged horse named, you guess it, Sleipnir.

             "Great job Loki!" Odin congratulated, hugging him. He turned his attention to Sleipnir. "And where did you get this awesome horse?"

             "Don't ask," Loki said, shuddering.

And that's how Sleipnir was made! By the way, he later becomes Odin's main horse.