Against your conscience, you didn't stop. Instead, you just gulped, turning away from your mother. "M-Mom..."
"Tracy dear, this isn't-"
"Make her think she's doing this herself." You muttered quietly. "If you do that, if you can, I'll go along with this... 'stress relief' of yours. Today only."
"Is that I need to pay?" Rebecca whispered, brushing the back of her stolen hand on your cheek.
"Yeah..."
"Then I'll be the best girlfriend you could want, Tim." Rebecca said, fiddling with your waistband. As you continued to look away, you could feel your pants slowly being pulled down, just before a warm tongue ran up the length of your cock. "Mmmm... you taste so-"
"Don't." You whispered, hating the truth of the scenario.
"Just trying to get you in the mood, sweetie!" Rebecca whispered in Tracy's sweet voice. "I haven't done this sort of thing since your father... you're bigger than him, you know."
"I don't-" You started, stifling your words as a pair of lips wrapped around the head of your penis, lightly sucking. As you let out a grunt, you felt a tongue coil around it, swiftly taking in the length of your member as warm, rapid breaths hit your groin. Tracy gave you the odd blowjob before, but this... this was on a whole other level. You could feel your legs growing weak all of sudden as you bit your lip, attempting to hold out just a second longer.
It didn't work. You could feel Tracy's mouth and throat constricting around your shaft, holding it in place as you shot your load. Tracy never swallowed. And definitely would've been upset with your lack of warning. But instead, you heard a playful giggle as a tongue cleaned off your rod.
"Anything else you wanna do?" Rebecca asked, standing up with a smile. "Don't worry, I won't see other boys while I'm in Tracy. As for girls..."
"What? D-"
"You know, Tracy'll think everything today was her. No matter what I make her do or say. So, why don't I make her like girls, but looooove you?" Rebecca offered, finally getting you to turn back and face her stolen face. "Cherie, right? I could probably convince her to make a threesome with you and Tracy." Rebecca said with another giggle that sent chills up your spine...