Lithium...
...Polonium?
(Lister of Smeg No talking. No smoking. Follow the orange line, Mon 13 Jun 2011, 12:30, archived)

No. Lipo-suction.
You tape them to your belly and they convert fat into energy.
( baldmonkey a frothy foul-smelling vaginal discharge, Mon 13 Jun 2011, 12:37, archived)