Sliding a finger into her mouth to wet it liberally, she moved it back under his balls and teased his ass with it, pushing just the barest of the tip of it into him as she sucked his cock, her lips and tongue sliding over him effortlessly.
Her ass wiggled in the air as she bobbed her head up and down on his cock, pleased at his reactions. It made her pussy wet all over again hearing him groan like that, knowing it was her making him feel that way.