On one particular day Crowley has Cas wearing sheer stockings, garters and matching lace panties that did nothing to disguise how hard his cock was. There was a wet spot forming on the front of the panties, and if Cas chose to bend over it would be very obvious that he had a fairly large plug in what Crowley called his "greedy, slutty pussy."

Since that night Crowley always had something planned for Castiel. He was particularly fond of dressing him in lingerie like now.

"Put your pants on." Crowley orders, "I want you to go to class wearing these." He pulls the elastic on one of the garters, and lets it snap back with a slap, biting into Castiel's skin. "No one in the room will have any idea that you have a plug shoved up into your cunt expect me. Hopefully that will be enough to satisfy your need for cock."

Cas whimpers, hands shaking as he buttons his jeans. He can feel the silk of the panties cradling his dick, brushing up against it and making him even more sensitive. Crowley has him backed up against a wall, nose skimming up and down the line of his throat, which is covered in hickeys and bite marks.

Crowley says the marks will have to do for now as a sign of ownership; that later he'll have to get a collar.

Castiel hopes he's not just saying that.

Cas closes his eyes, feels Crowleys firm hands hug at his nipples, roughly bringing them to hardness. They're pink and tender from last night when Crowley had clamps on them while he fucked Cas. With each thrust inside him Crowley had tugged on the chain connecting the two clips until Castiel had practically begged for release.

Castiel hisses at the touch, but does not pull away—he knows better now. Crowley is a wonderful Dom, an excellent one and Castiel will not deny him anything.

Crowley makes a rumbling noise, deep and low, and pinches the sore nubs again. It's painful, but Cas leans into the touch. What a sight he must look like, he thinks, pliant limbs, helplessly leaning up against a wall wearing lingerie underneath his day clothes while Crowley—oh god, while Crowley pulls and pinches sending waves of want through him.

"D—D-Crowley, please, I—"

"Shhh…." Crowley urges, whispering directly in his ear, and then nibbling on a lobe, "We all know now that you have a pussy…but I guess that also means that these must be tits." He gives an extra hard tug for emphasis and Cas wails, actually wails at that.

"Hmm…" Crowley intones thoughtfully, "Slutty pussy, slutty nubs… maybe we should get these pierced…they'd look so pretty like that, little gold hoops in your tits. I'd suck and bite on them like crazy." He lightly kisses Cas on the lips, chaste and almost even innocent, a stark contrast to what has just been said.

"Maybe later…" Crowley comments casually.

The next day Castiel goes to a piercing parlor, and gets them pierced. Crowley doesn't let him out of his bedroom for two whole days.

He has to call in sick. But of course it's worth it.

Another night when Castiel is grading papers Crowley bends him over his desk, and pulls down his pants, only to push the crotch of today's pair of panties to the side. With a sharp tug he yanks out the butt plug he has Castiel always wear now—so he is ready and prepped at all times for his cock.

Wordlessly Crowley slides in, filling Castiel to his breaking point, despite the prep there is still the barest hint of a slow burn, but Castiel prefers it this way. It means he'll be tight and hot around Crowley. He loves how Crowley doesn't even ask now, just takes without comment or warning—because now he knows he doesn't have to, Castiel will do almost anything for him.

"Perfect tight pink hole wrapped around my cock, just love getting fucked don't you Cas? Bet I can get you to come all over these papers…what would you do then, huh? Everybody would know how much you love my cock…" Ragged breath tickles Castiel's shoulder, and he can feel Crowley lightly bite the nob of his spine possessively.

"Yours". He thinks.

"You like that cock in your cunt, Cas? Want me to fill you up with my come? Have you dripping with it for days? I'll probably plug you up, keep it all inside you. Tell me how much you like your pussy filled with my cock Cas." Crowley persists, relentless, thrust after thrust, bottoming into Cas, spearing him deep and wide.

"Crowley—I—I love it, please." The reply is weak, overwhelmed, every thought in Castiel's head is swirled on Crowley, on the feel, the taste, the sight, the smell of him—a whole world filled with Crowley.

A slap is delivered sharply to the swell of Castiel's ass cheek, and he bites back a cry in response, "Love what?" Crowley questions, and Castiel knows his answer isn't good enough.

"I-I love your big cock filling up my slutty cunt. Please Crowley—I need it. Please! Oh God! Oh-Oh Crowley YES!"

Crowley reaches around Castiel, and with his free hand tugs on the ring on his newly pierced nipples, "Come!" he orders, with a voice almost as ragged as Castiel's.

Castiel howls, clamping down tight on the cock embedded inside him. Crowley hisses at that and soon after Castiel can feel Crowley's come filling him to the brim, bringing him over, painting his insides and marking him as the older man's.

"Good boy." Crowley praises, collapsing with Cas onto the floor beside the desk. Both are sweaty, and happily spent. Castiel can't even bring himself to be unhappy about the messy tests he's just come all over—he's just too darn happy.

Any approval from Crowley made it a good day.