He suffers an erection sleeping with his mother

A teenage boy and his mother sleep together, he has a problem, he suffers an erection and has trouble falling asleep, so he decides to jerk off. His mother realizes, and rubbing against her does not help, the mature decides to end that by helping him to sleep at once. He grabs his son's cock and starts to jerk him, it seems that it will not be enough, so he decides to suck it, at first with repair since he is his son, but little by little he is released until he gets a small ejaculate in his mouth. Ready, you can sleep peacefully!