Just to digress a moment - Lepus Rex discussed the fish which swims up the urethra in a much earlier post. Ironically, I had just read a fiction book which had a passage about this fish and had assumed it was fictional. However, a web search for it (it's called the candiru) proved that it is indeed a real creature. Although some of the comments raised doubts about reported amputations and deaths caused by the candiru, others maintained the veracity of such reports. Apparently, since the fish is parasitic and attaches itself normally to the gills of larger fish, sensing their location by the water flow through the gills, the act of urinating in the water can set up enough of a flow to attract them. The rest is history.

One interesting poem about the situation is here:

Click here