Tell her, "Because you're a little cum-slut."
From Create Your Own Story
With a sadistic grin lost on her cum-closed eyes, you reply, "Because you're a little cum-slut. That much is obvious." As she starts to protest you interrupt her before she can do any more than open her mouth. "Before you deny it, realize this is your one and only chance. Admit it, and I'll consider training you to be my perfect little cum-slut. Pretend you aren't an eager, little whore and you'll never touch my cock again." Kara was hot, and obviously had a talented mouth, but you had plenty of tail chasing you. If you're going to risk the ire of your best friend by doing his little sister, it's going to have to be because she's willing to do more than any of the other girls your could have riding your pony within half an hour of calling them.
As she opens her mouth again, obviously prepared to try to deny it, some of your cum drips down into her mouth and onto her tongue. The moment the taste hits her, she shudders in delight, and can't bring herself to say what she was going to. Instead, she hangs her head in defeat and shame and whispers, "I'm anything you want me to be, as long as I'm yours." In the back of your mind, you've always sort of realized she had a crush on you. You'd just never let yourself think about it--Bro Code and all that bullshit. Now you realize that she may have just had a little crush on you back in the early days when she first started developing the amazing curves she had these days, but apparently you've been the sole star of her fantasies all this time. Your cock immediately springs back to full mast as you realize that not only is she absolutely in love with you, but she seems willing to do anything, or at least try to. This was mind blowing, but you'd think about the deeper ramifications later. Right now the only deep thing you wanted to contemplate was how far you were going to shove your raging boner into her.
Do you:
