Just beat it off quietly in bed
From Create Your Own Story
You let out a sigh and grab your cock and start to stroke your cock gently closing your eyes and start to think about all the beautiful women which you have fucked in your life. You're about 90% of the way to burst a massive load when you hear a voice. "If you needed your cock serviced Master, you should have told me."
Your eyes snap open and you see Rochelle, a 40 something year old that is living with you. She's under five feet tall with blonde hair and bright blue eyes. Her tits are large and slightly saggy with wide hips and a nice juicy ass. She has a small pudge, but she works it well.
"What can I do to help you Master?"