overheard "how do you make it stop when it goes blinking mad like this?"

"i can't find the off-switch"
"i didn't think there was one"
"there's always an off-switch
          - they just hide it"
"maybe it's ..."
"never mind,
          it seems to have sorted itself out"
"it always seems to do that
          just before you get round
                    to switching it off"