You're jerking off in the bathroom and your MILF STEP-MOTHER-IN-LAW comes in and you're so BUSTED jacking off! She is shocked but also entertained at the SIZE OF YOUR COCK and encourages you to keep stroking your big cock for her. She needs to make sure you can satisfy her step-daughter; she gives you masturbation instruction as to how to jerk your cock as well as hand motions to follow too. She watches intently as you stroke faster and faster until you cum into the toilet and your step-mom in law's eyes just light up! Then she leaves as quickly she came in.