You peel back the lid of the sardine tin expecting to find a row of squashed up little ex-fish, but instead there is a hiss of compressed air as a gigantic inflatable sardine inflates to full size. It appears to be made of thick polythene, and stencilled on its side in large black letters are the words "ONE MEAN SARDINE." Its mouth is invitingly open, the interior dimly lit from the basement lights shining through the slightly translucent material. Will you climb inside, or go back to the elevator?