"Oh yeah, 'cause your crotch is a real treasure."
Like most males, turtles are proud of their penises. The difference is that there is no law against reptilian public indecency, so sometimes they get into the habit of waving their dick around, which is known as penis fanning. This has led to a series of hilariously horrified pet owners asking the Internet why there is a "poo," a "dark bladder," or a "black flower" coming out from behind the turtle. Black flower? How would a penis even look like-
OK, yeah, there it is.
The terrifying part (yes, that video wasn't the terrifying part) is that sometimes your Leonardo's little katana gets stuck flopping around outside his shell, a problem known as a "penile prolapse." The good news is that this condition can be treated in your own home. The bad news is that you'll never feel clean again after doing this.