NORSE HORSE #2
Svadilfari was a mighty stallion that belonged to a builder that made a deal with the gods to create a giant wall surrounding Asgard. With the help of Svadilfari the builder was able to work three times faster than the gods had expected and they did not wish to come up with their part of the bargain.
To thwart the builder they sent Loki in the form of a mare to distract Svadilfari who went galloping into the woods to have hot horse sex. The builder was unable to complete the wall in time and the gods were once again secure in their positions of divine jerks.
Loki later gave birth to Sleipnir, the eight-legged horse of Odin’s. Now that scene wasn’t in The Avengers.