It wasn't an expression that Sam had really heard before, but from the tone of her voice, it was definitely a good reaction. That was exactly the sort of reaction that he had been wanting to get from her. There was a small part of him that was entirely vain and egotistical about it all, liking that he was the one that made her make that noise, but a larger part was pleased at knowing she was enjoying it so much.

He repeating the motion with his tongue before turning his attention to her clit. Unsure how sensitive she might be, he was gentle at first before gradually building up to more rapid movements with his tongue while his fingers gently massaged between her legs.