Calibrations Always Go Up And Down

(It’s the night shift in the hospital lab. I’m the scientist doing the nightly calibrating of our analyzers’ drug screen when the ER requests a drug screen, which I can’t run until I finish my calibrations; once I start, I can’t stop. We tell them it will be done as soon as possible, and we’ll rush the sample, which they’re okay with. Meanwhile, some plumbers are working on one of our sinks. The lead scientist comes to my bench to check on my progress and get a better ETA to tell the doctors.)

Lead Scientist: “How’s it coming over here?”

Me: “I’m almost ready. I just need to do cocaine and marijuana.”

Lead Scientist: *without missing a beat* “[My Name], you know better than to mix uppers and downers.”

(The plumbers all went silent and turned to look at us. I hope they didn’t think we were actually doing drugs.)