What's That Hard Thing I'm Sitting On?

Shake!~ Shake!~

"I-I think you should stop, mom. What you're doing right now isn't good for me or you..." I gritted my teeth and tried to make her stop pushing her bare bottom onto my crotch below, since there was an obvious problem arising that I didn't know if my mother would like or not.

Grind~ Grind~

"Stop what, Kafi? You mean this~....Should I stop doing this?~" My mother was having way too much fun annoying me and did the exact opposite of what I said, by grinding her asscheeks against my thighs to the point where it felt like I could feel her smooth skin drag against my naked thighs. And she even started to hug me so that she could put more force and pressure on my lap. 

Bounce~ Bounce~