As you can see, the joke is that this dude's results hilariously came up positive for pregnancy. So either it's a terrible endorsement for the accuracy of pregnancy tests, or this guy was mistaken about the specifics of his own plumbing system. But Reddit users had another theory -- as some of them pointed out, a false positive on a pregnancy test for a male can be an indication of cancer. Some users urged CappnPoopdeck's friend to take himself to the doctor and get checked out.
As it turns out, Reddit's diagnosis was correct. The kid who took the test went for a check-up, and they found a small testicular tumor. Evidently, a tumor down there can cause a man's balls to go haywire and start releasing ovarian hormones usually associated with pregnancy, which is what the test picked up. Had CappnPoopdeck not had the presence of mind to meme-ify his friend's hilarious piss shenanigans, the guy would never have thought to check.
If this doesn't bump him up to RearAdmrlPoopdeck, nothing will.
Fortunately, the tumor was small enough and caught early enough that doctors were able to treat it. Yet another life saved by rage comics! We believe that brings the total up to one.