A/N: One-shot for the anon prompt 'paredolia'. Kurt is going down on his boyfriend when he comes face to face with an interesting birthmark. Warnings for oral. (Pareidolia - is a type of illusion or misperception involving a vague or obscure stimulus being perceived as something clear and distinct for example - seeing the face of Jesus in a grilled cheese sandwich)

"Sebastian?" Kurt peeks up with concerned eyes from where he kneels between his boyfriend's legs. "Sebastian…what is this?"

Sebastian peeks down at him, his eyebrow raised at the awkward question.

"That, Kurt," Sebastian says, "is my dick. And from where you are the best thing to do is stick it in your mouth and…"

"I'm not talking about that, you ass!" Kurt hisses, smacking Sebastian on the hip. "I mean this here…

Kurt runs a gentle finger over a spot on Sebastian's inner thigh, barely able to enjoy the small tremor that travels through Sebastian at his touch over the thread of worry in his mind.

Sebastian sighs.

"Is it splotchy and kind of beige?" he asks.

"Yeah," Kurt says, still eying it warily.

"It's just a birthmark, babe," Sebastian says dismissively, putting a hand to the back of Kurt's head and trying to redirect him to the task at hand. Kurt shrugs the hand off and Sebastian huffs in frustration as his hard-on withers a bit.

"Have you even seen this?" Kurt asks, relaxing at his boyfriend's reassurance.

"Kurt…" Sebastian eyes the ceiling, trying to think erotic thoughts until his boyfriend gets his head back in the game, "I'm pretty flexible, but as previous adventures in self-fellacio have proven to me, I in no way can examine the spot you're looking at with my own eyes."

"You could use a mirror, doofus," Kurt groans, delivering another smack, this one to Sebastian's ass.

That brought his hard-on back.

"What would be the fun in that?" Sebastian asks. "Besides, I had a dermatologist check it out. It's okay. So now that we know that I'm healthy, can we get back to…"

"Do you know it kind of looks like Elvis?" Kurt asks, tilting his head and giggling.

"You mean, like the King?" Sebastian peeks back down at Kurt, this time a little curious himself.

"Yeah." Kurt runs a finger around the outline, and Sebastian moans.

"Young Elvis or old Elvis?"

Sebastian reaches down and wraps his fingers around his cock, pumping slowly. He can't help it – Kurt's light touches against his skin, his breath so close to where he wants Kurt's mouth to be…Sebastian's cock is desperate for attention.

Kurt sees Sebastian's hand and brushes it away, replacing it with his own.

"It looks like hot…sexy…young Elvis…" Kurt runs a tongue around the edge of the birthmark, licking, kissing, and sucking while he speaks, working over Sebastian's growing erection with deliberate strokes of his fist.

"D-does that turn you on?" Sebastian stutters, dying to rib Kurt really bad about what could be a brand new fetish, but he doesn't want to risk losing that hand on his cock and Kurt's talented mouth so achingly close to his balls.

"Would that be strange if it does?" Kurt moans against his skin. "Because if it's not strange, this could become my favorite activity…" Kurt wraps his lips around Sebastian's balls and sucks lightly, licking gently with his tongue. Sebastian's back arches off the bed, and every taunt he can think of dies in his throat.

"N-no," he mutters quickly. "No, not strange at all. Completely normal. Do that whenever you want…"

Kurt smiles, stroking Sebastian faster, thrilled by the low whine it elicits.

"Whenever I want?" Kurt asks, pulling only far enough away to be heard.

"Yup," Sebastian whimpers, trying to get Kurt to go back. "Far be it for me to deny another Elvis fan."

"Another Elvis fan?" Kurt chuckles. "I didn't know you were a fan of Elvis."

"O-oh yeah," Sebastian stammers, managing to wiggle his way back into his boyfriend's mouth, "he's been my absolute fave for at least…oh…the last three minutes…"