Every so often, FARK comes up with something truly wierd. This is one of those times. A fish that reportedly wedges itself in your urethra. What really got me though, was a short, largely hidden quote towards the end:

There are no confirmed reports of deaths or penectomies–several cases of the latter are thought to have run afoul of piranha. Because if there’s one thing worse than a Candir� up your urethra, ‘7;s a piranha biting it off entirely.