- autopeotomy
In his book The Surgeon of Crowthorne, Simon Winchester supplies medical background
to the character Dr Minor's act of autopeotomy, and offers a warning : beware' the
renowned bloodsucking Brazilian fishlet known as candiru, which likes to
swim up a man's urine stream and lodge in the urethra, with a ring of retrorse spines
preventing its removal, one of the very rare circumstances in which doctors will
perform the operation known as a peotomy.

Dear consuelo: here's your old friend "candiru" again.Read material in URL below:
http://www.straightdope.com/columns/000519.html