Stepmother and stepson share hot milk with morning cereal

I went shopping to the supermarket to buy breakfast, when I returned home I could not open the door because I forgot my keys, my stepson was late to open the door, he was supposedly "busy doing his homework for the study", but in truth he was watching videos of "fucking with my stepmother". I brought for breakfast what he likes so much (milk with cereal), when we entered the kitchen, he made a joke telling me that there was milk, but I told him where? That I hadn't seen anything. He pulls out his big cock and tells me that there is milk there, I tried to control myself but he knew that I was in the mood for it and besides his father is traveling and has not given me milk for several days. I couldn't control myself.