Becky wins.

The little dark haired lesbian gamely struggled on, but her blonde lover was experianced at pleasuring men with her mouth. Tania gagged and choked each time a cock entered her mouth, whilst Becky was easily able to draw the spunk from each set of balls with her superior technique.

By the time Tania was onto her third cock, Becky was bringing the final protuding penis on her side of the wall to ejaculation. As the cock started to spurt, the buxum blonde sat back exhausted. The dyke ignored the wildly twitching prick in front of her as it spat streams of slimy jism across the milky white expanse of her tits.

"We have a winner, no?" Dr Cremova commented,

Tania was sobbing, her face and short dark hair smeared with ejaculate, but caring only about the fate of her love.

Becky rose a little unsteadily and faced yourself and the Russian scientist belligerantly.

"OK, you've had your sick fun." She hissed. "Are you going to honour the promise you made?"

"But of course." Dr Cremova said, sounding incredulous that Becky could suspect anything else. "If we did not deliver on our word then your cooperation in our experiment would cease."

"So Tania can go back to her cell?" Becky clarified.

Cremova nodded. "And as a reward for both your splendid efforts in your first test I will allow the two of your ten minutes to shower and clean yourselves. The guards will escort you to the shower cubicle."

"THE shower cubicle." Becky queried, her face suddenly animated with a ray of hope.

"Certainly, you will have ten minutes with your little pussy licking friend before we prepare you for the experiment with 417." Cremova answerted. "As long as the both of you continue to cooperate fully with our work there will be similar rewards."

The smaller girl rushed to the larger blonde and hugged her. Their nubile teenaged bodies slipping against one another, lubricated by the vast quantity of cum that glistened on their prison pale flesh.

The guards stepped forward and motioned for the girls to come with them. Clasped in each others arms the girls went placidly, still warily looking about as though suspecting some deceit was being played out.

"Will they have their ten minutes?" You ask Dr Cremova.

"Of course, it is positive reinforcement of docile behaviour." She answered, "The shower is of course fitted with spy camaras and microphones. It will be most interesting to see their unguarded reaction to their captivity and experiments."

"Yes," you ponder aloud. "That might be enlightening, lead on Doctor I should like to watch the response live."