Talking pish?

[Robert]

Or, at least, talking powered by pish:

Scientists at Bristol University and Bristol Robotics Laboratory have created a fuel cell that uses bacteria to break down urine to generate electricity.​

​

http://www.treehugger.com/clean-technology/british-scientists-power-cell-phones-urine.html?

 

[Glaucus]

So if you plug your refrigerator into that and keep it stocked with beer, does that mean it's a perpetual energy source? Worth a shot!