As a rule, the acts of capture of speech are extremely repetitive. But a marginal share of capture of speech consists of unexpected words as for time, place, object, or subject of their emergency. Among these, moreover, a small set is known to be unexpected as for all these elements simultaneously. Where and when they should not have happened, acts of improbable enunciation burst out from unlikely people, that a minority of forces relegated to silence. The dialectic between text and image outlines the essential features of these acts of speech that impose a new order to the movement of the speech.