Marie kissed him passionately, rubbing her small ripe tits on his bare, hairy chest.

"Oh, thank you, Uncle Bill!" Wantonly she ground her pussy on his cock, feeling the meaty thickness grow and swell by the moment. "I love you! You're just like another daddy to me. I love you so much."

Then she looked at him and saw, how brightly, his cheeks were flushed with embarrassment. Marie climbed off the couch and smiled shamelessly, staring straight at his prick. Obscenely his cock stuck through the sheer cotton of his pajama bottoms, throbbing and jerking.

"Ooh, Uncle Bill!" Marie giggled. "What's that big fat thing sticking out of your pants?"

Bill blushed scarlet and tried to cover his straining cock with his hand. "Uh, you shouldn't ask questions like that, Marie."

"God, Uncle Bill, you've really got a big one! Ooh, I wanna see."

Then she fell to her knees in front of the couch, sliding her hands up his thighs to the waistband of the pajama bottoms. Bill could only gape at her as she quickly tugged them down and tossed them over her shoulder, leaving her uncle naked.

"Marie, for God's sake!"

"Oh God, Uncle Bill! You've really got a whopper."

His cock was enormous, even bigger than her brother's. The huge pink shaft of blood-swollen flesh quivered straight out of his prick fur, capped by a gigantic puffy knob. His cock was so thick that Marie could barely get her hands around his prick shaft. She cooed as she gripped his mammoth prick, stroking, making pre-cum dribble out of the piss slit.

"God, Uncle Bill, I've never seen a cock like yours before. Ooh, I want to put it in my mouth and give it a good sucking!"

"N-n-no, Marie!" Wildly Uncle Bill looked around the den, as if afraid that Marie's parents would return at any moment. "Jesus, you can't give me a blow job. What's gotten into you?"