Idea: Friend's mom backrub.

[yuoke]

A high school senior is staying over at a friends for a few days, one of the days his friend's mom asks for him to help move some heavy object (doesn't really matter). While lifting his back gets pretty sore and friend's mom gives him medicine to try to help. That doesn't work and says that she will try to give a good backrub and see if that will do it. Take it from there.

 

[Guest]

the guy starts really enjoying the back rub and he gets aroused the friend's mom sees this and she opens his pants and see's his very large package and she is so turned on at the sight of it that she starts giving the guy a blowjob.

 

[yuoke]

kind of obvious