A decade or two ago, one of the course sections I was responsible for in the General Pathology course was entitle "Examination of the Stool Specimen". Needless to say I was in the habit of never transporting the specimen container openly, it was always carried in a brown paper bag. One day on my way to the class, which was always an 8 AM class, I stopped in the cafeteria to get my coffee and dognut, I placed the bag down as I attempted to juggle my papers, large styrofoam cup, glazed dognut and somehow get my wallet back into my pocket. By the time I had my act together someone had walked off with my bag. And it was such a nice specimen, just loaded with Giardia lamblia trophozoites, one of the nicest giardiasis specimens I had ever seen. I guess that was a classic example of a failure to get your shit together.
Actually, ejaculate is one of the nicer biological specimens!