Sweetheart, I've noticed lately that you've been a bit on edge. Agitated. And I believe I know the reason why.
The reason is, you have a bunch of pent up sexual energy that needs to be released. And, step-mommy wants to help you feel better. Step-mommy wants to help you release all that bottled up sexual energy.
There's nothing wrong about a step-mother helping out her step-son when he is in need. In fact, that's what step-mommies are for! What kind of step-mother would I be if I didn't help you out?
Now, normally I would just use my hands. However, with the amount of... energy, you need released, I think it would be best to use my mouth. Step-mommy's mouth is absolutely amazing. It's almost magical. And a good blowjob is exactly what you need to feel better.
So, lay back and relax. Step-mommy is going to do all the work. And when you're ready to cum, release it all down my throat. And I promise, afterwards you are going to feel so much better.