She helps him out by making him perceive a tiny more comfy while he drains on the couch. She plays with her slit and watches him stroke his long ruler. Then he adds his schlong to her pussy, and the supreme times get taller exponentially. He tucks his long inequality inwards her and works thru all the calculations with ease. She likes every inch and rails him up and down, showing him all the possible values that a variable can have. Finally, she takes his derivative on her chin and is downright satisfied. This seems like how math should always be taught, doesnt it?