Whatever he was going to say came out as an incoherent gasp...
Enjoying the way he jerked about like he was attached to a live wire, she fluttered her tongue against the underside of his cock.
"Aahhhhhh."
He was long past coherence. Hot and hard in her mouth, she decided to free him from the briefs. Not only were they constricted around the base of him, they'd twisted and tightened every part of him. Pulling her mouth from him she tried to slide them down, but they were tangled, so she just yanked them off over his length. His member slapped against his stomach, wet and shiny in the midmorning sun. The tingle between her thighs had graduated into wet, watching him fall apart under her ministrations. She made as if to slide up his legs to push his cock inside her, when his hands caught her shoulders.
"You know the rules. You come first, and often, always," he whispered.
She decided the rules didn't apply today and firmly wrapped her hand around his dick, followed by her lips. She pumped him mercilessly, long wet strokes, palms fluttering across his impossible firmness, tongue dancing across his head, lips wrapped tight around his length.
"Rules be damned, you're coming first this time. I want you--"
She stroked him in earnest now, faster, slickly, watching him jerk around under her hand.
"-- to come in my mouth." She plunged him back in deeply.
Almost immediately he cried out, and exploded in her mouth, four fast spurts that overwhelmed her lips, his come leaking down his shaft and running down his balls. She could feel his heartbeat on her tongue, hammering fast, as he was gasping for air.
"Ahhhhhhh."
Now he was at his most sensitive, her favorite time, and she made the most of it, letting the rest of his come coat her palm to stroke him, and watched him writhe and twist and cry out. She tickled his thighs with her hair, snaking her tongue out periodically to lick him and make him twitch.