Let him fuck you.

Billie thought about next month's rent, "Okay, I... I'd appreciate your generosity very much Edison,"

"Excellent! Could you get me a cup of water, I'll need it to wash down my medicine,"

Billie stood and got him some water from the faucet as he tossed the red pill into his mouth and began to undo his pants. The man had a very small cock, although it was already hard and leaking precum he couldn't have been more than four inches long.

Taking the water he washed down his pill. The transformation didn't take long. Mr. Clark began to shake and groan as his cock began to spert jets of clear fluid out onto the coffee table. Soon his shaft had swollen to double it's original size, his twitching sack however stayed in it's diminutive from.

"Good god look at the size of me? I'll bet I could..." he bent forward, straining, tongue extended. Just barely touching the tip, "Ha! Did you see that!"

Billie was actually impressed, back when she'd been a man she'd often tried and failed to do as much as he'd just accomplished, "Impressive,"

His chest swelled with pride before he once again noticed Billie's expression, "Turn around, take off your clothes. I plan to be very generous with you,"

"I... Okay..." her face flushed as she followed his directions.

Mr. Clark stepped up behind her, shoving the table aside as he did. He slapped his massive member against her ass, sandwiching it between Billie's cheeks for a few strokes.

"Oh fuck, your ass feels so much better than my wife's,"

Billie began to feel uncomfortable with the situation as she listened to the man moan and compliment her.

He started thrusting, then progressed to humping her ass cheeks like a rutting buck. Just when Billie started wondering if he'd actually fuck her he stiffened and moaned.

"Oh shit! Goddamn it! Fuck!" Hot cum jetted out onto Billie's ass and back. Before he moved to thrust his now dribbling cock inside of Billie's moist cunt.

"Oh fuck!" Billie gripped the couch tightly as she was stretched impossibly wide.

"Oh you like that don't you?" His cock pulsed, continuing to ooze semen into her.

"Actually it really hurts,"

"Oh," His mind seemed to clear, "do you want me to stop?"

"Yes please,"

Cum flooded out as he withdrew from her.