Horny and alone, I decided to indulge in some self-love, my hand working my throbbing cock as I thought about the naughty things I'd like to do with my girlfriend. I was so lost in my fantasy that I didn't hear the door creak open. Suddenly, my mom walked in, catching me mid-stroke, my cock glistening with pre-cum. I froze, embarrassed, but she just raised an eyebrow and said, "Don't stop on my account. I've seen it all before." Embarrassment turned to excitement as I continued to stroke my cock, my mom watching as I worked myself up to a powerful orgasm, cumming all over my stomach.