The lingam or phallus functions as an all-embracing symbol in the Hindu religion, but if a street urchin draws one on a wall, it just means an interest in his penis.
Jung uses the lingam as his definitive illustration that the same image functions as an ‘all-embracing symbol’ or as mere sexuality depending entirely on the psychological context and developmental level of the viewer.
, Collected Works Volume 18: The Symbolic Life, 1976thesis