Bill Moore believes penis enlargement should be as ordinary as Botox, and business suggests plenty of men agree. From his Dallas clinic, the entrepreneur has built a growing operation around men willing to endure needles, expense and considerable discomfort for a few extra inches. Manhood follows Moore and two of his clients with an unexpectedly straight face, finding ordinary people behind an extraordinary proposition. The laughs are plentiful and the procedures decidedly graphic, but something more unsettling emerges as private insecurity becomes a routine consumer transaction. In an age of relentless self-improvement, Daniel Lombroso’s penetrating documentary asks what happens when feeling inadequate becomes a problem someone can sell you the solution to.