Sex With Mom For A's

Son, all that studying you did for the test paid off! You got an A!!! I'm so proud and was thinking of something fun we could do to celebrate, maybe the arcade? No? The mall? no? Okay, well what's your idea? Sex?!?! I don't think so son, that would be so wrong and where does it end?! I do want you to get good grades. You'll only get good grades and study if I have sex with you? Okay fine! but it's our secret!! OMG son, you're so good at sex! we can definitely keep doing this if you study!