Psychologically: Possibly a reflex dream about the present feelings: Insecurity. Who slips in the dream on smooth ground and falls down, has the fear 'to misbehave', not to have grown to the smooth parquet (socially) and to trip what is called: to make itself ridiculous before others, to strike unpleasantly or not to correspond to the expectations of the surroundings. Who often dreams of a 'gaffe', something would have to undertake for the increase of his self-esteem. Could it also be, however that one has lost the control - maybe in the erotic relations? (See also slide of)