UGSS-042 - Mom, please stop... The seductive mother who follows me into the bath

Honestly, mom's breasts are too much to handle. She walks around in thin underwear, pretends to 'accidentally' wander into the bathroom while I'm showering, and even masturbates in front of me. I want to tell her to stop, but every time I see her, I can't control my erection. The boundary between mother and son is blurring.