This is an extensively detailed account of the analysis of a young man who suffered from the compulsive need to exhibit his genital and to bump into girls in public conveyances. This symptom was accompanied by extensive anxieties and inhibitions in his relationships with women for whom he felt affection. Sperling's description of the psychodynamics as they unfolded during the analysis is noteworthy for its clarity and understanding of the various interwoven themes underlying his illness. The author considered his 'oral fixation … the most important determinant for the origin of the exhibitionism'.