Start with her mouth

You walk over to her as mom is more or less creaming herself in excitement. You decide that it would probably be best to start with what you're entitled to before you get the rest of your compensation. You tell her to get on her knees and she, as expected, obeys. You begin rubbing your new 12 inch member against her face, enjoying the full range of new sensations offered to you.

You seems moms face flush red and you slap her face a little with it, and bury her nose in your sack. As her hot moist breath hits you, it finally pushes you over the edge and you shove your cock in her mouth.

Taking the initiative, you slowly begin thrusting into and out of your mother's mouth. Savoring each motion as you do so. Before long, you begin to pick up pace and thrust faster, and just like that you are bucking your hips and fucking your own mother's face, treating her more like a fleshlight than the woman who gave birth to you.

As you can feel the tip go down her throat, you can feel it. You're about to cum.