Alicia Walker is doing something unusual: she's asking men - 3600 men to be precise - to send her photos of their genitals. All for the very noble purpose of scientific research.
Walker, an assistant professor of sociology at the Missouri State University, in the US, has put the call out for penis photos as she launched a study this month to explore how the size of a man's penis can affect the rest of his life.
"The kind of work I do is not for everybody," she said, quoted by USA Today.
In her study, the professor will look at how penis size, as well as the man's perception of that size, can have an effect in his health, sexual life, self image and even mental health.
"So far I'm hearing a lot of anxiety and a lot of low self-esteem related to size," she said.