Yes

"Penelope, I think you should strip now."

"Of course, master."

After you have both girls nude, you decide that one more person should be stripped of clothing. Luckily, you only have pajama pants on.

"Can both of you help me out of my pants?"

"Yes, master," they say together.

As soon as you are stripped, your 7-inch cock springs up in front of your squatting sister, nearly smacking her in the nose. Because of where she is at, you decide to grab the back of her head, and start pushing her mouth onto your dick. As soon as you enter, she starts giving you one of the best blowjobs you've ever had. Apparently, she isn't the innocent girl you would've thought she'd be. While this is going on, you see your mom has started to masturbate. You reach out to her, and start fondling her breasts, eliciting a louder moan from her. this event keeps going until you start feeling your release happening. As soon as you feel the tightness in your balls, your hand leaves your moms tit, and meets your other on the back of Penelope's head, pushing your dick down her throat. When you feel her nose against your pelvis, you let loose, and send rope after rope into her stomach. Like a good slut, she swallows it down without any hesitation, or problem.