My small penis: Some people are brutally honest
Newsbeat's been to the UK's first small penis party, where men (and women), gathered to celebrate diversity, and confront some of those insecurities.
Most of the male guests had what's classed as a small penis.
According to the BJU International Journal of Urology - small means less than the international average - 9.16cm (3.61in) when flaccid.
Graham, one of the guest, falls beneath that although he says now come to terms with it. He met up with the host of the Small Penis Party - Ant Smith to talk about what it's like.
There's more information on penis size anxiety on BBC's advice pages.
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