Edgar Rice Burroughs belongs to a select club of writers who dug so deeply into their reader's base desires as to come up with something primal, and profound. Such a creation is Tarzan, a character who so logically straddles the human and animal worlds as to cast doubt on their very separation. Burroughs couldn't get away with written sex, in the early 20th Century, but the implication is never far from the surface in his books. After all, what more basic fantasy do we have? If you'd like to know more about Burroughs, I recommend Tarzan of the Internet for the full text of the first nine novels, or simply taking a trip to your local used book seller.
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She turned back with a smile, sitting on all fours, presenting her rump to him. With a squeeze, her lips came apart. Moisture glistened between them. He took her hips, finding her opening, and sank his broad dick into her insides.
She cried out dimly; behind her, his jungle groan rent the afternoon stillness. She became aware of a cache of small, round pebbles under her hand. He slid out and pressed in again, deeper, and she lost her thought's thread for a moment. It felt so good. Pebbles, she dimly remembered. No. What was the word? P- Pearls. What were those for?
He hurled himself against her, again and again. The humours coursed into her vagina, and thus away from her brain. She dug her heels in. Her toes and long fingers grasped deep into the springy undergrowth. His great hands dug into the sides of her buttocks. He vocalized. His tip bumped her cervix. He grabbed at her hair, pulling her head to one side. She cried out with more desire than pain. He let go.
Her head lolled to the ground, as he increased in intensity. The wet slapping sounds were too much for her. Inside, she grasped his dick even tighter, thrusting her hips back at his. Her head flopped around like a rag doll's. The wild canopy of trees swung around her before she planted her face on the ground, sliding back and forth on the undergrowth. He flattened the rest of her body. His weight came down on top of her. She heard his deep, forge-bellows breathing, directly beside her ear, and felt the intensity of his dick impaling her.
Her ears had closed, and the world had stopped by the time he came, filling her inside with seed, and giving out a booming jungle cry.
The two lay panting for a moment. It wasn't long before he stirred, and rose off her. She rolled over and sat propped on her hands, with her legs akimbo, letting him see what he'd done. She glanced first to her pussy, where the whitish semen was beginning to run out, and then looked at him with a wet, wild expression like that of astonishment.
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