My step-son is home on a break from college. I come home from the gym to catch my step-son sniffing and licking my dirty panties. I can see that he is turned on and tell him that my pussy is really smelly after my working out at the gym - I suggest that he might like to smell that instead! He is hesitant at first but I remind him that step-dad won't be home for a while yet and my pussy smells so much stronger than my panties. My step-son agrees, so I take off my clothes and show him my pussy. I start out very gentle, but my questions get more demanding, with more and more dirty talk and I start getting very dominant. I tell my step-son exactly how to eat my pussy and threaten to tell his step-dad everything if he doesn't do exactly what I say. Then I want more, I demand him to fuck me, all the while with extreme dirty talk and making fun of his small dick. To finish up, I tell him that he must cum in my mouth, I need to swallow all his cum as we can't leave a mess for his step-dad to find. After he has cum I take the panties that he was sniffing and stuff them into my pussy, then take them out and give them to him as a little present.