You are a step-mom and you have been hosting two exchange students. They will be leaving tomorrow and you are helping them pack. You find some of your underwear and socks in their cases. You are shocked that they would steal from you, as they have been so good while they have been staying. The students explain that there is a challenge back where they come from to see what they could do with their host step-mom. You are disgusted and so disappointed in them, you take your underwear and socks back.  That night you are in bed with your husband and you can't nod off instead you have got turned on at the thought of having sex with the two students in secret as a proper send off. You sneak into their room and wake them up. You tell them not to turn on the light and keep quiet. You tell them that you have decided that if they make you cum you will give them something to remember you by, but it will be a one time thing and they can't tell anyone, especially your step-son and husband. You check the bedroom door is locked and get naked.  You give them blowjobs, let them take turns fucking you riding one and sucking the other, they spit roast you. Finally you tell them to cum on your face, which they do. You are out of breath and tell the students you had fun. You give them each some of your underwear and tell them they can take a photo of you with cum on your face. You remind them this is a secret and that they need to go back to bed now, you start to get dressed again but then you stop and think about it, you decide to have another round with them. You have sex with them all night, in the morning you come out of their room, naked and covered in cum. You say to yourself you are a very good hostess and maybe next time there is an exchange you can do this again with more students.