Does size really matter? It's the age-old question. According to one recent study, it certainly seems to matter to men.
A survey carried out by medical advice website Dr Ed found that while the average perceived penis length is 14.1cm for men, they think the ideal length is actually 16.6cm.
That's a whole 2.5cm of low self-esteem.
Dr Ed also found that Austrian people had the longest perceived ideal length of the countries surveyed - at 17.6cm. The UK had the shortest at 14.2.
But that is still longer than the average penis length - 13.12cm when erect, according to a 2015 study.
As Dr Ed concludes:
Perceived ideals reliably outpace the perceived average size almost everywhere – yet notions of what's "big enough" are far from universal or agreed-upon. Depending on location and cultural context, a man of average or even above-average size, unfortunately, still has ample opportunity to perceive himself as inadequate.