Despite their very basic functions, toothbrushes typify a highly diversified, and often cryptic, universe. Design, terminology and features embedded in these everyday objects remind some recent technological developments. This applies in particular to optical fibers whose products sound almost supernatural. Starting from this observation, the goal was to show how extrapolations are pivotal in the creation of a collective imagination. Thus, the principle adopted was to select and apply the enigmatic products descriptions made by optical fibers manufacturers to the toothbrushes photographed by Maxime Guyon. This lexical substitution brings together two regimes of contemporary commodities that belong to radically different regimes but, in many aspects, share the same languages.