Caught!

Doc: "Quickly now, pants off. We havent got all day." She instructed the very instant the lab tent flap was closed.

Jeff: "I beg your pardon?" Jeff tried his hardest to sound taken aback.

Doc: "You know why you're here Jeff, Im not stupid. I saw you eavesdropping on myself and the general last night." She put a fist on her hip and made a slightly exasperated face.

Jeff: "But... how?" He stumbles over his own words.

Doc: "I'm a cleaner. I notice little things like that. Now lets make this quick!" Doc was clearly becoming a little annoyed.

Jeff opened his mouth to speak, but decided against it. Instead, he just shuffled out of his grimy pants and underwear, allows his limp dick into the open air. He then looked to Doc for further instructions.

Doc: "Well? Get to it! I'm here to examine your sperm, not your penis." She turns away, beginning to tidy her lab.

A few minutes of futile stroking pass, and Jeffs cock refuses to harden up.

Jeff: "I... need some... material" he mumbles, his cheeks flushing red in embarrasment.