(Yahoo!) - Justin Bieber's mop top has been the butt of many jokes over the years, and he can not only take it — but he can apparently dish it out, too. In an interview with Rollercoaster magazine, the "Boyfriend" singer called out none other than his royal highness, Prince William, for his thinning hair. "I mean, there are things to prevent that nowadays, like Propecia," Bieber, 18, told the U.K. publication. "I don't know why he doesn't just get those things, those products. You just take Propecia and your hair grows back. Have you not got it over here?"
Although the Prince has been too busy hosting the Summer Olympics to respond (or care) about Bieber's immature remark, he has plenty of people coming to his defense. British journalist Jessica Callan told the Huffington Post that those in the U.K. "are viewing Justin Bieber's diss about Prince William's challenging hair problem in the same way you view an annoying fly buzzing around you. He needs to be swatted away. Wills and [his brother] Prince Harry may joke about William's thinning hair, but that doesn't mean a kid like Justin can come sauntering in and join in the joke."
But William and his family have a good sense of humor about the fact that he is not an heir to a full head of hair as even his father has poked fun at his 30-year-old son's disappearing hairline. At his April 2011 wedding to Kate Middleton, Prince Charles reportedly "joked about his own bald patch and his son's thinning hair, saying it must be hereditary," a guest told The Sun. "Everyone found it funny, even William and Kate."
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