President Barack Obama has been doing a good amount of radio interviews lately, and a DJ finally asked him the question on the lips of many a Hip-hop fan: What do the president and Jay-Z talk about?In a wide-ranging interview with Cleveland's z107.9, Obama said he gives the rapper a bit of advice on the parenting front. "I made sure that Jay-Z was helping Beyonce out [with the baby]," he said. "And not leaving it all with mom and the mother-in-law."Jay-Z and Beyonce recently had their first daughter, Blue Ivy Carter. Obama and Beyonce and Jay-Z's friendship has been a hot topic in recent weeks. The star couple hosted a lucrative fundraiser at the 40/40 Club and Jay appeared in a new campaign video. "I’ve gotten to know these guys over the first several years," Obama said on z107.9. "They’re good people. They're down to earth. Beyonce could not be sweeter to Michelle and the girls. So they’re good friends.They really are down-to-earth folks. We talk about the same things I talk about with all my friends."The president also said he prefers Jay-Z's "My First Song" over "99 Problems," because the former track reminds him "to always stay hungry." People