Fantasy Friday: A Conjugal Flirtation

Said Thor to Sif: "I'm worried 'bout our boy."
"Which one and why?" she asked, and gave a sniff
Of pure disdain. "They're not mine. You enjoy
Jarnsaxa, talk to her." "Don't start a tiff
Again," the thunder god said to his wife.
"Advise me." "Fine." "So, Magni's really strong."
Sif tossed her metal hair, said, "Lord of strife!
Of course he is. When you decide to prong
A giantess --" "This jealousy becomes
You not." "No, I mean this is no surprise."
"Well, true, but that boy's prowess simply stuns!"
"Now I see who is jealous." Parted thighs
And wicked laughter proved then it's not hard
Distracting gods, when they're that dumb and scarred.