"W-Wait, Daddy, you said that you would make my butt move in a certain way when you rubbed me down there...Did I move the way you thought I would, or did it not work out at all?" She looked back and asked, realising her son was trying to do something with her ass, which she had totally forgotten since she was overwhelmed by the tingling sensation that had made her knees go weak.
"You didn't notice the way your butt moved when I touched you down there, Abi?" He asked his mother with his eyebrow raised, like he didn't understand how she didn't see such a big movement.
"N-No, I was a bit distracted..." She couldn't say that she was thinking about the fluids on his finger, and looked away with a flushed look on her face.
"Well, you don't have to worry, as I can simply do it again...Or, more like, make you do what you just did." He said, and started to rub her lower anal wall the same way he did before, with quick finger movements.
Squelch~ Squelch~