Cum Coloring?

Dr. Ironrod looked up from his clipboard. "Oh you guys are going to be so excited," he said, clearly excited himself "We're working with ejaculatory dyes today!"

All the campers looked around at each other, clearly confused.

"It's like food coloring," Ironrod said, "but for your cum."

The explanation put a smirk on the one male camper's face. The rest of the group was still pretty matter of fact about the whole thing. Sam, for his part, still didn't really get it. He was also getting increasingly horny. He was way past half-mast at this point and about to jump on the first woman that made eyes at him.

"OK," Dr. Ironrod said. "Each man will take one of these," he rattled a little baggie with a few pills inside, "and then he each woman will help him achieve orgasm, then record their findings. Please begin with oral sex and collect the first ejaculation as a sample. Please limit your intercourse to one position per orgasm; we must try to limit the number of variables as much as possible."

He looked around the room, his lips moving as his head slowly turned... "Oh, I guess we're a man down," he said, "I guess I'll be taking one as well... No big deal." A quick glance at his khakis and you could tell how big his deal was. "Ok, boys, grab a pill. Ladies, grab a clipboard from the far end of the room."

Sam approached Dr. Ironrod. "Mr. Archer, he said, I think the new guy should get first choice, don't you?" Sam shrugged. He picked a pill out of the bag. It was sky blue.

"So does that mean," Sam asked, noting the color of the pill.
"Yup," Dr. Ironrod cut him off. "Now hurry up and take the damn thing. I expect you guys to try at least three positions before the end of this session."

Sam walked toward the back of the room to grab a glass of water, but also to find his partner. The four ladies, clipboards in hand, were walking back. He smiled and waved, as if he wasn't he wasn't about to see all them naked and fucking. Almost in unison, all four of them looked him and up and down before settling their gaze on his crotch: The indian girl with the fat tits licked her lips. A brunette latina woman started playing with the button on her shorts. The woman in the tube-top took off her jacket, revealing more cleavage than he had thought possible. The fourth woman, a young blonde with sizable tits, played cute, batting her eyelashes and pouting.

Like he thought before, Sam was ready to jump all of these women, but he needed to choose one. It seemed like all of them were into him so...