His size, sensitivity, and stamina.

Soren let out a slight yelp at the sudden movement, before he knew it his tiny penis was exposed to again, something Jin obviously found amusing. He was embarrassed to be laughed at, but the feeling of humiliation combined with the sensual sensations from Glimmer only served to heighten his arousal. Jin continued to giggle as Soren’s light struggling made his tiny member bounce around.

Subject is stimulated by humiliation. Soren heard Glimmer report, his cheeks felt hot as he was exposed so openly. The slime girl moved her head towards his crotch. The small twig between his legs twitched. Subject size is below average in both length and girth.

"Well that much was obvious at a glance" Jin replied with a snort. "I can see clear as day how tiny that little thing is, c’mon Glimmer, you have to do better than that." Jin continued to write down her notes as Soren was melting under the attention his shortcomings were receiving.

Soren let out a gasp as a new tentacle engulfed his cock. It was warm, and he could feel it milking his shaft. Penile length is below the 10th percentile, in a room of 1000 men. Over 900 men would be larger. Soren felt a drop of precum be wicked away from his penis as her words brought him closer to the edge. Jin was openly laughing at this revelation.

"Ohhh, I knew it was small, but having the numbers to back it up makes quite the difference!"

In the other room Naz looked a little uncomfortable. "Are they being too mean? What if he doesn't like it this intense?" Naz was concerned for her new companion, Yue found the worry adorable.

"Fret not my dear," Yue put a hand on Naz's shoulder. "Soren has a safe word, and Glimmer and Jin are professionals. Trust me, they are giving him exactly what he wants. I bet his little thing has been held on the edge of spurting for a while now!"

Soren's face felt hot, his knees were weak from the constant teasing. He felt like he had been on the verge of cumming for too long, he never had much stamina, so he found his endurance surprising. Glimmer sensed his confusion. Orgasms are restricted till proper testing is conducted. I will not let you cum until it is time. Somehow the ooze had taken complete control of his cock, the sensation was overwhelming. He felt his balls twitch and shaft throb as it begged for release, but somehow the slime’s magic prevented his relief.

Beginning sensitivity testing. The slime tentacle milking Soren increased its intensity, rubbing faster and faster, secreting a natural lubricant that also served as a slight aphrodisiac. Soren had lost the ability to speak, as the only sounds he could make were moans and babbles of pleasure as the slime girl toyed with him. His legs gave out, but Glimmer held him aloft, continuing to pleasure the elf's tiny penis. Permitting first emission. Soren erupted, spurting his cum into the slime girl, as she hungrily sucked it in for consumption. His body shook as he released shot after shot of cum, his mind going blank. He hung limply by his arms, as all the strength had left his body.

Sensitivity above 80th percentile. Stamina within 30th to 35th percentile. Semen production, 70th percentile. Cum, tastes sweet.

"My my my," Jin applauded, " looks like your little member put on quite the show. Better work on that stamina though! With your sensitivity and size, you're gonna be hard-pressed to please anyone before your tiny thing busts." Jin proceeded to write down the information in her notes. Soren was concerned about who would have access to this information, but he was both too aroused, and too tired to care. "Alright, we got one more test for you boy. You ready?"