Naruto, Sakura/Sai, sure Sai, a punch in the face can be considered foreplay...
If he didn't stop talking, Sakura was sure she was going to kill him. It was not the most opportune moment to be having those kind of thoughts, and really, the time to back out had come and gone long ago, but Sakura was a stubborn girl and now that the idea had come into her head it was hard to let go.
"Are you feeling quite all right, hag?"
Sai smiled down at her eerily. His fine artist's hands were splayed out on her hips, pale and spidery, and there wasn't a trace of a tan line where she knew for a fact that his belly shirt cut off. Sakura didn't bother to restrain herself from rolling her eyes. "I'm fine, Sai."
"Are you quite sure?" His eternally pleasant smile didn't waver a bit. "Because if this is too much for you... well, you wouldn't want to get strained. Perhaps another woman could join us? Miss Beautiful seems amenable enough to my company -"
"Are you seriously asking me for a threesome when we haven't done anything yet?" That was just insulting.
He tilted his head curiously. "It seems a common enough occurrence in the source material I've referenced."
Oh god, and he really meant it, too. Sakura could just picture Sai briskly plowing through a pile of bad romance novels and Icha-Icha specials, arming himself for the rigorous mission ahead of him: successfully pleasuring a normal female. So good at applying abstract concepts to tearing his way through squads of enemy nin, so bad at figuring out... this. Sakura sighed. So maybe the upbringing which had forged him into a nigh-unstoppable assassination machine had something to do with it. But still.
Being those cat-slitted eyes she could tell wheels were turning... oh god, he was gearing up for another go.
Sakura made a snap decision and Sai made a sound of surprise when she looped her hand around the back of his neck and pulled him downwards. "Okay, Sai," she said. "This should be easy for you."
Sai looked up from his intense study of her navel. "You have been brainstorming as well, hag?"
Sakura forced back the compulsive tightening of her fingers around his throat and rolled her eyes upwards. "Sort of. Look... um, you read about oral sex, right?"
"An intriguing practice," he smiled. "Swallow, don't spit. Go slowly. Do not thrust into the woman's mouth as you come."
"Sure, Sai." She waved her hand awkwardly towards her nether portions, watching as his gaze followed her gesture and he - finally - got a clue.
She was confident he'd pick the details up quickly. Even if most of his reading had been for the reverse situation. He was a genius, after all.
And if she had to listen to him talk again she was going to have to break his neck.