Written to: Daylight - Matt and Kim, crosspost from AO3

Callipygian: Having shapely buttocks.

Thor wonders if it is just the thunder rumbling in him more than usual, or if Loki's bottom has become much more attractive than usual, or if it is a combination of the two. He finds himself hard pressed to stop staring as Loki glides past him at breakfast, finds his mouth goes dry too quickly as Loki bends over to fit Modi into his seat, finds that he cannot stop his eyes from tracing the smooth swell underneath Loki's robes.

"You seem particularly smitten with my backside," Loki observes one night after dinner is finished and he and Thor are safely ensconced in their chambers. "Has my front side not been so inviting recently?"

Thor stares at the outline of Loki's long legs underneath the thin white sheet, finds he cannot drag his eyes up any higher than the small of Loki's back.

"I do not know what it is, love," Thor admits, reaching up to Loki's shoulders and dragging down the sheets, sighing in pleasure as he feasts his eyes on the view afforded to him. "You have a very pleasing bottom to admire. It is so...well, my words fail me at the moment, but it is quite possibly one of the loveliest, if not the loveliest, bottom in all the realms."

Loki snorts, rolls his eyes. "I would think that I am the most gorgeous being in all the realms, thank you kindly, but I do suppose my bottom does make some contributions to that title. And as for your words failing you, that is nothing new; however, I think some words that might be good to describe it would be along the lines of firm, resilient, perky. Things like that."

Thor cannot help but agree, and gently palms one cheek before drawing back his hand and quickly slapping it. He admires the bright red handprint he leaves behind as Loki yelps, pushes himself up, and glares at Thor from around his shoulder.

"What was that for, you imbecile?" Loki snaps. "You certainly don't hit things you like, hasn't millennia taught you that?"

Thor eyes him carefully. "You like it," he points out. "And I like it."

Loki huffs in annoyance and tries to ignore the flush crawling across his cheeks. "That doesn't mean anything," he says, but as Thor draws his hand back and lays another great big print across Loki's other cheek, Loki finds tingles of arousal running up his spine, much to his horror and Thor's vast delight.

"You have a perfect bottom for spanking," Thor says. "I am quite grateful for it."

Loki rolls his eyes, pushes his hips back towards Thor for more, looks back when Thor doesn't continue. Thor is stroking his beard, thinking.

"If I have such a shapely bottom," Loki hisses, wiggling it at him and enjoying how Thor's gaze snaps instantly back to him, "how dare you ignore it? One would think you were a god, to have such self-control."

Thor laughs, pats Loki's bottom reassuringly.

"Do not worry, love," he says. "I was just wondering if you still had those dark, tight pants you and the Lady Darcy bought on Midgard. You know the ones I am talking about, the black ones that cling delightfully tight to your legs and waist?"

"What of them?" Loki wants to know.

"They make more of those pants on Midgard, yes?" Thor asks, pinning Loki to the bed. "I would wish to have you wear them and then rip them off you, but since this particular god does so enjoy the view they afford, it would be quite a shame if you would never be able to wear pants to that effect again."

Loki laughs and presses a kiss to Thor's mouth, telling him not to worry, America is obsessed with skinny jeans at the present moment, and Thor grins in relief before he commands Loki to go to the closet and put on the pants in question.