Off the top of my head, Freya went down one evening into the bowls of the earth where the dwarves lived.
Dwarves are great smiths and metallurgists, but they are horny and greedy little bastards.
Freya fell in love with a necklace made by a group of dwarves called the Brisings. She definitely wanted it but the dwarves demanded she sleep
with them; all FOUR of them. The dwarves were not into a fivesome: they each wanted to have her for one night.
So Freya (that slut), spent four nights engaging in little people sex.
Freya is the Aphrodite of Norse myth, and this story portrays her sexuality.