xkcd
~ Humour, My Reseach, Physics
XKCD does it again with another great one, if you don't follow this web comic well maybe it is time to start.
Of course like any good myth it has a basis in reality, however an extension cord is several orders of magnitude to small for Geomagnetically induced currents, such as have caused black outs such as the one in Quebec in 1989.
