son woke me up to suck his dick at 3 am

My son was out with his friends and I guess he didn't have any luck when he was out because he came home and he woke me up he asked me to make him food first and I did and then when I went to go give him his food I saw that he had his cock out and he said you know what to do Mom you're the slut I gave him his food and got on on my knees to give him a blowjob I suck on him until he nutted in my mouth then I got up and left went back to my room to sleep with my husband my son doesnt seem to care of any one watches us but im scared :(