A/N: Another Kink Meme entry-Rossi asks Reid to call him Daddy. Not a pairing I normally write, but the prompt intrigued me. Warning: Slash, sex, language.

Here it is-please review!

Seds

"Spencer-baby. You're so hot." Rossi nuzzled into his lover's neck, nibbling gently as he fucked him. "You're my sweet little boy, you know that? My sweet little baby boy."

"Oh... Dave... God, yes. Yes! That feels so good, Dave, so good-"

"Call me daddy, sweetheart," Rossi whispered in Reid's ear. His cock was plunging in deep, thick. It deliciously battered Reid's prostate and made him moan.

"Daddy," he whispered, not even really conscious of what Rossi had said, or what he was saying.

"That's right, angel. Say it. Oh, Spencer-" Rossi pulled back and lifted Reid's legs higher, resting them on his shoulders. The sound of that name, that intimate, somehow forbidden, pet name, drove him mad. He wanted to fuck the boy, fuck him senseless, fuck him into the mattress, make him his own, to make him come, to make him spurt streaks of creamy, pearly cum all over his belly and chest, then lap it up for him, to clean him, to take care of him like a good daddy should... All these thoughts and images flashed through Rossi's brain in quick succession and he began pile-driving himself even deeper, even harder, into Reid's tight, hot, welcoming little ass.

"Oh, God! Daddy! Fuck me, please! Fuck me, Daddy!" Reid gasped, pleading, loving the feel of Rossi's meaty cock spearing him with such power that he felt himself melting, loving the feel of Rossi's heavy balls banging against him as they fucked. "Oh, Dave... Daddy, yes, I'm coming, you make me come, oh-"

Reid's cum shot out, spattering all over his torso just as Rossi had envisioned. The sight thrilled him. "Spencer," he whimpered. "Say it. Say it once more-call me daddy, baby, please."

"Daddy," Reid whispered again. "Daddy, daddy, daddy..."

"Oh, God, yeah. Yeah..." It only took a few more moments of unrelenting thrusting for Rossi to cum. He grunted and groaned and roared out his release, then collapsed on top of his lover.

"Spencer," he croaked brokenly. "That was... amazing." He raised his head and pulled his throbbing cock out of Reid. "Thank you," he said.

Reid laughed slightly. "Thank you? For what?"

"For indulging me. I know... that didn't come easily, calling me by that name."

"Oh-it's all right. It's not like I ever used it with my parent."

"You didn't? You never called your father 'daddy?'"

"No, it was always 'father.' I was a rather formal child."

"Well, still-I'm sorry, kiddo." Rossi gathered him into his arms. "Maybe we better stick with 'Dave' and 'Spencer,' huh?"

"No, I liked it. I'll call you that again. During intercourse, at least. I like the affect it had on you."

"Oh, yeah?" Rossi grinned broadly. "Well, then, I'd like that. But, I'd like anything you chose to call me. During intercourse, at least."

Reid nestled in his arms. "Daddy..." he said softly. Rossi kissed him, and they contentedly drifted off to sleep.