A man took a pregnancy test as a joke and it came out positive. A Reddit post with cartoons (link to cartoons in previous link) and posters urged him to go to the doctor. The man had testicular cancer. Talk about a big surprise.
Would you as a guy use a pregnancy test at a way to see if you had such a cancer?
I am not sure I would, but if I found some weird lumps in my sac, I would think about it.