Ambiguity

It was 1972 and after finishing my internal medicine residency at Parkland Memorial Hospital, I was doing a fellowship in infectious diseases.  Part of the training involved working in a research laboratory  at the University of Texas Southwestern at Dallas.

James was a middle-aged, amiable, black man who kept the lab running with clean glassware, fresh reagents and healthy mice.

Late one Friday afternoon I was reading at my desk, and I smelled popcorn.  I went further back in the lab and there was James with freshly popped corn.  Beside him I saw a plastic bag with red, green, purple and blue kernels.

I asked James if that was colored popcorn.
He replied, "No, you can have some."
I had some.