The Seductive Seed of a Tranny MILF

When she opened her eyes again she took notice of Jackson's disapproving expression. "Don't look like a prude when you're going to have a pint of my DNA splashing around in your stomach soon," she said.
Jackson stifled his objections. He needed Martha. Needed what she could provide. He was always going to have to make certain concessions to keep her happy and willing to supply him. Jackson had no way of knowing how steep those compromises would soon become.
It was her next request that clued him into the scope of what she intended for their new relationship. The time came quickly when Martha seemed particularly unimpressed with their current bargain. One day out of the blue she wouldn't take his underwear.
"You don't want them?" Jackson asked, a little embarrassed. He'd just gotten used to the idea that his unwashed skivvies could be desirable to someone like her and now she didn't want them.
"No," Martha said, "I may not be bringing you my loads anymore."
"No?" Jackson's spirits instantly deflated. "Is there... someone else?" he asked with a surprising amount of hurt palpable in his voice.
"There's no one else," Martha replied. "I want to keep feeding you. But do you want it too?"
"Yes. Please. You know I don't want to stop. I could wear other underwear. You could pick them out if you want," he offered with some evident embarrassment.
"It's going to take more than that," Martha declared. "I'm tired of doing all the work. You've been getting the milk practically for free. From now on if you want the cream filling you're going to have to do the milking."
Jackson blushed crimson. "You want me to... to help you masturbate?"
"It's to help you. You're the one on the semen diet. You don't have to say yes right away. I'm going to make this so easy for you. You know where I live. Come see me anytime. Tonight. Tomorrow. Next week. Help me rub one out and the load's yours. Show up or don't. That's the only way you're getting my seed from now on. Be prepared to work for it."
Martha didn't wait for Jackson's response. She gave him a wide grin, grabbed her clothes basket and left. Jackson looked back and watched her big, voluptuous ass swinging as she walked. It was the kind of ass that could crush a man and make him beg for more. Jackson felt crushed and he worried he might soon be begging her for more.