When working through State of matter Life the most common misidentification of Homo sapiens is as Agaricus bisporus. This is a result of the computer vision option.
I think this is a temptation. I have no idea how hard the coding to do this would be, but when the computer vision lists Homo sapiens as the first possibility, top of the rank order list, no other possibilities should be offered by the computer vision. If the image is truly of some other species, the user would have to type in that name manually. From what I have seen the computer vision is really accurate on picking up Homo sapiens, and this might cut down on the joke IDs by removing the temptation to choose a mushroom or other species. This would not end the problem, but would certainly encourage identifying the image as Homo sapiens.