Your hot step-mom unexpectedly walks into your room as you are getting ready for bed. Little does she know, you have been jerking off furiously in an attempt to relieve your balls. You haven't been able to cum for a week and the longer you go without a nut the more backed-up you get. You try to hide your aching erection under the covers, but your step-mom know that something is up. She pulls back the covers and is alarmed to see your throbbing cock. She can tell that you are backed up and offers to help make sure that you cum. She encourages you to begin stroking nice and slow for her, with a gentle grip and lots of spit. As she instructs you, she gets her tits out and begins to play with her pussy. After a few minutes of instruction and edging she gets down on her knees and counts you down to climax. You release a giant load all over her tits and into her mouth. Satisfied that you have been sufficiently drained, she wishes you good night and heads off to bed.