The perils of social networking were on President Barack Obama's mind Tuesday when he answered questions from a roundtable of ninth graders in Virginia. One student asked Obama for any advice he might have in her pursuit of one day becoming president. "First of all, I want everybody here to be careful about what you post on Facebook because in the YouTube age, whatever you do, it will be pulled up again later somewhere in your life," Obama said, adding that young people tend to "do some stupid stuff." Agence France-Presse notes that the president is no stranger to the problems of our media-saturated age: Viral videos of the Reverend Jeremiah Wright and an offhand comment about people "clinging to guns and religion" nearly derailed his 2008 campaign. In another lighthearted moment, Obama said that the person he would most like to have a meal with is Mahatma Gandhi, though "It would probably be a really small meal because he didn't eat a lot."