This lurid account of a staged sex show featuring a simultaneous double blowjob is from The Hidden Camera by Susan Carter. It’s a Liverpool Library Press (LLP) stroke book first published in 1972, number 215 in the Rear Window series (RWS/215):

The two naked men on the stage began to manhandle the voluptuous girl with a cruel kind of contempt. Herman, the big blond chauffeur, seized her wrists and spun her so that everyone might see her nakedly rounded buttocks that were unblemished and perfectly twinned. She rocked and undulated as Ben, the dark-haired butler and bodyguard, reached forward with big rough hands and began massaging her softly quivering breasts, which excited the crowd even more.

Her back still to the audience, the men made her bend over, forcing her down with their brute masculine strength. As she bent over and spread her legs to keep her balance, her buttocks were completely exposed, as was her narrow, hair-lined cuntal slit with its swollen vaginal lips. The men treated the girl roughly, each of them seizing a cheek of her ass and spreading it to show her anus hidden deep in her fleshy crevice.

The audience was beginning to urge the threesome on, whispering obscenities as men and women caressed each other lewdly in the dark.

“Fuck her!” was hissed.

“Make her suck!” another breathed.

“Fuck her, fuck her ass,” another said hoarsely.

“I’d give a hundred… no, two… no, damn it, I’d give anything to spend a night with her.”

“Fuck her, fuck her silly.”

“Quiet.” The voice of Fred Hartman cut through the air that was heavy with cigarette and marijuana smoke, stopping all the dark-time talk. Couples lewdly caressed one another in silence while they looked at the stage with predatory eyes.

The men suddenly freed her, and she whirled around on the audience, her voluptuously full breasts dancing as she turned. Her beautiful face was animated, and it was obvious she had enjoyed being so obscenely displayed in front of everyone and hearing their vulgar suggestions.

Her hands wrapped themselves around the rampant shafts of the now fully thick cocks, and she began stroking them in a lewd time, pulling the skin all the way back until she fully exposed their purplish mushroom heads. Both Ben and Herman began fondling and caressing her lushly ripened breasts. They got rougher with each passing second, pinching her nipples and almost brutally massaging the soft flowing flesh. Their hard hands were getting wild and running all over her naked body, and she permitted them to do whatever they liked. In fact, she seemed to enjoy it as she closed her eyes. Her eyelids fluttered and a pleased, dazed smile was on her wetly parted lips as she stroked their iron-hard cocks with both her hands while their fingers roughly probed at the sensitive flesh up between her long lithe legs.

Obscenely, she bent one knee and lifted the leg slightly, her weight on her bare toes, giving the men a better avenue to her cuntal opening. She grimaced half with pain, half with anticipated pleasure as Ben’s thick forefinger forced its way up into her wetly throbbing pussy. He began sawing in and out of the lust-dampened cunt, his finger glistening with her lubrication.

Now the room was intently silent. The atmosphere changed from high-charged sexuality, to a silent, intent lewdness. Everyone watched as the girl jutted her hips forward and let her hips begin to pump, ever so slightly, in time to the finger sawing in and out of her wetly clasping vagina. Her hands were still squeezing the two cocks and stroking them in a lewd rhythm, as Herman grabbed her long, coal-black hair from behind and pulled her head back. Their open mouths locked together in a long lewd kiss. Their wetly hot tongues could be seen licking at each other as his big hands pawed and fondled her proud naked breasts.

The room seemed to be growing hotter, and everyone pressed closer to the stage as they realized what they were seeing: a no-holds-barred ravishment of a girl who looked like she belonged on the society page or in a Hollywood movie. The combination of her stunning looks and obvious sensuality and wantonly wild behavior was too much. Men made secret plans to abandon their wives and mates later on in the evening in order to get to this pagan girl who was writhing so lewdly in front of them.

The scene grew wilder and low animal moans came from the crowd as they watched the girl slowly sinking to the stage floor. The finger was pulled from the tight opening up between her legs with a wetly plopping sound, as Ben and Herman slowly forced the girl down on her knees.

Actually, there was no need to force her. Willingly, slowly, tantalizingly, her hips pumping lewdly all the while, she knelt on the floor of the stage between the two men, still rhythmically stroking their huge cocks. Her eyes half closed, she turned her head and looked longingly at Ben’s erect, brutally hard penis in front of her face.

The men shuffled in on either side of her, giving her little room. With a look of pure bliss on her face, the girl pulled Ben’s thickly pulsating cock down to her half-open mouth and let her tongue flick out and lick its huge swollen head. Then, opening her mouth wide, she slowly guided the hot shaft of hard flesh into the warm moist confines of her mouth. Her lips closed down around the blunted head and her cheeks hollowed and expanded as she began sucking.

“Aaaaaaahhhhhhh!!” Again, a moan, a ripple of delight went through the room. Zippers were opened and male hands found their way up dresses as everyone watched the nakedly kneeling girl begin hungrily sucking on the penis as her other hand stroked the blond Herman’s excited penis. Her head bobbed back and forth as she devoured as much of the hard flesh as she could. Ben’s long pulsating shaft glistened with her saliva and shone in the overhead spotlight as the big bodyguard began to brutally fuck in and out of her mouth, his powerful hips pumping back and forth. With a loud groan, his hands reached down to tangle in her long charcoal black hair and hold her head in place as he began to jolt her with the force of his inward strokes.

Herman meanwhile contented himself with reaching down and caressing her nakedly quivering breasts as she sucked with eyes blissfully closed. The room was thick now with cigarette smoke and the pungent, sweetish smell of hashish. Couples were openly and lewdly embracing each other. The smell of alcohol hung heavy in the air as men were drinking, a fever in their flesh as they watched the salaciously exciting spectacle up on stage. Clothes were being dropped hastily to the floor with a sibilant rustle as almost everyone felt the need to be naked. Yet every eye was on the stage and the helpless girl who was so obscenely crouched between the two men.

The girl pulled Ben’s wetly glistening cock from her mouth with obvious reluctance, her lips clinging until the very last minute then her tongue licking its underside lasciviously, before she snapped her head around and opened her mouth wide to take in Herman’s long hard thickness. Her free hand groped behind her for the swollen wet cock her lewdly hungering mouth had just abandoned; it was slippery in her hand, and she fondled its heatedly pulsating length as her mouth slid back and forth over the hot pole of male flesh with an ecstatic intensity.

The two men were aroused now to a near-violent state, and they crowded around her nakedly kneeling body, their hands massaging and roughly fondling her tender flesh. They seemed determined to do everything to this girl, and they were growing wilder and rougher with each passing second. They tried and finally succeeded in getting both of their hotly throbbing cocks in her mouth at the same time.

They held her head tilted back, holding her brutally by her long hair as they stood side by side fucking into her beautiful face. People in the audience left their seats to press around the stage in order to see this obscene humiliation of the girl. Her head was forced back and her mouth was grotesquely opened wide as both massively thickened penises were crammed into her mouth. Wildly, insanely, she sucked at both of them, her hands cupping their powerful buttocks and pulling them toward her. Women panted and men gaped with open mouths at the sight of the voluptuous girl sucking both lust-thickened cocks at once…