I fuck the plumber while my son and his friend spy on me and jerk off.

I am separated from my wife and it is the first time that my son spends the holidays in my house with a friend of his. i get comfortable and try to relax when there is a knock on the door. it's the plumber. i do not know how to leave the dishwasher but my ass leaves me as new putting my fingers. what i never imagined is that my son and his friend spied on me and jerked off while i came.