This is not only salacious and weird, but scientifically fascinating!  
Certain ducks, unlike all other birds, have penises.  And they can be as 
long as their whole bodies.  And they seem to be getting longer.  
http://www.nytimes.com/2007/05/01/science/01duck.html?_r=1&oref=slogin

Laura Appelbaum,
Cloverly, MD