Get a blowjob and learn more rules

The Professor placed his hand on the hypnotized cavewoman's hair and pushed her head toward him, rubbing his needy hard cock on her ape-like face. "Lick cock."

She was too entranced to resist. She dreamily stuck out her tongue, running it along his shaft, happily drooling onto her already wet tits.

Innocent Eyes watched in awe. "Hot!" she repeated, rubbing her legs together. The Professor decided it was safe to let her stay awake for the moment. He kind of liked having someone watching him show off his powers.

"Tell cock rule..." he said to Shrewd Eyes, hoping her subconscious mind would understand he was asking her to explain the rules.

She spoke between licks of his dick, actually speaking more eloquently than when awake. "Wank is free, how girl tease man. Lick, lick, lick. Man work, girl suck cock. Lick, lick, lick. Man work hard, girl butt fuck cock. Lick, lick, lick. Man hunt meat, girl cunt fuck cock. Lick, lick, lick. Some girl, man trick."

"How trick?" asked The Professor.

"Man try trick all girl, work some," explained the hypnotized Shrewd Eyes. "Dumb girl, trick spoon then cunt fuck. Lick, lick, lick."

"Mmm... like spoon fuck," Innocent Eyes moaned, again seemingly not understanding the part warning her about being tricked.

Shrewd Eyes continued: "Butt girl, trick grind then butt fuck. Lick, lick, lick. Suck girl, trick lick then suck..." She lovingly licked his dick, totally unaware of the irony.

The Professor considered this, his dirty mind spurred on by this tongue-bathing of his dick. Maybe he could help the cavemen identify which cavewomen were easily persuaded into which sex acts, and select for those traits. "You suck girl?" he asked.

"No! I wank girl," said Shrewd Eyes, sounding proud of it even in trance.

The Professor lined up the tip of his dick with her mouth, then pushed her head down onto it. "You suck girl now," he laughed.

"Mmmmm..." Shrewd Eyes suddenly moaned. She started slurping enthusiastically on his cock, rubbing her legs together, her nipples standing up.

"Hot! Like lick suck..." Innocent Eyes watched with similar enthusiasm. Her puffy lower lip dropped open and she drooled a bit, clearly remembering times she'd been persuaded to suck dick. She leaned closer, perhaps hoping to be included.

"Oooh yeah... Like grind butt fuck?" The Professor hopefully asked Innocent Eyes as he thrust his cock deeper into the entranced woman's face.

Innocent Eyes shrugged. "No."

Hmm. There might be different genes for different sexual interests then - assuming it was genetic at all. The Professor wondered, should he brainwash the women to change their rules and hope it would be inherited culturally, or teach the men to select slutty women and hope it would be inherited genetically?