Blindfolded step-mom unexpected sex with step-son till twice creampie

I came from the party and lay down under the blanket so that the light wouldn't shine in my eyes and started masturbating. Suddenly I felt a hard big dick with my hand. I thought it was a dream and gave in to the excitement. When I started to cum, I lifted the blanket and it turned out to be my step-son, who kept fucking me hard until he came in my pussy twice