Well now, thanks to science, we can answer the very question that's boggled male minds as researchers have deduced what women like about a man's, ahem, manhood.
A study of 105 women found that “general cosmetic appearance” is the most important aspect when it comes to glancing at a penis, while the “position and shape of the meatus” (the hole at the end of the penis) was considered the least important.
Researchers at the University of Zurich also found pubic hair, penis skin and girth to be key factors in what makes a good-looking member.
Contrary to popular belief, penis length was sixth in a woman's priorities of what contributed towards an aesthetically pleasing penis.
The research was conducted as part of a larger project on hypospadias which is a medical condition where a man's urethra emerges somewhere on the shaft or base of the penis, instead of at the tip.
Roughly one in 300 boys is born with some degree of hypospadias, according to the NHS.
Scientists wanted to understand whether the location of the meatus would affect how women judged a man's penis, and the study revealed that it was the least of a woman's concerns.
In regards to what makes a penis perfect, scientists also deduced that there's “no single penile aspect that is essential”.
The research has been published in The Journal of Sexual Medicine.