Bathtime (a classic)
She thinks to herself, silently:
("Oh my God, he's buying it! Like I'm doing this for any reason OTHER than to tease his cock without mercy!")
("I have never seen such purple-blue balls before! I'm kinda curious to see how much cum he'd shoot if I let him right now, but I can't stop the tease... It's like I'm an addict. It turns me on more and more; the more he moans with frustration and the more he looks at me with those sad, desperate eyes, the hotter I get. And the hotter I get, the more I want to see his cock straining and hard, like it's going to explode...")
("And mmmm, the way it looks locked up and hurting with his balls swollen! And it's all because of me! It looks so cute bunched up tight in that cage...")
("Oh, God! I really need to get in the tub with my dildo!")