I agree with what much of what has been siad already. The world is pretty much a song waiting to be written. There are kinds of stories out there, you just have to look and listen and it doesn't hurt to carry a pen and notebook around or a small hand held recorder. Everything fom 9/11 and the heros and rescuers who risked and lost their lives, to killing Bin Laden to Hurricane Irene that devasted the northeast and the wild fires that devastated Texas or hte balckout in California; the capture of Whitie Bulger; the approaching fall and winter seasons, the falling of leaves and snow, the rising cost of living and gasoline prices, the struggles of the American trucker, soldiers going off to war or returning home with no arms and legs, the high unemployment rate, the recession/depression we are in; the uncertainty of our economic and polictical futures, our role in an ever changing global economy and how the rest of the world views America, global warming and it's effects, the cop who was shot on the street, the drug dealer or gang member who shot him, the child that was reported missing in your neighborhood or state, the lunctic who went on a shooting spree, the collection of meaningless reality tv shows, everything from biggest loser to Jersey Shore and Mafia wives, perhaps most relavent to you - video games, World of Warcraft or Grand Theft Auto or something like that or make one up? Sift through news websites everyday, i.e CNN, Fox News, ABC and NBC local news stations from around the country or around the world if that interests you. Listen to Jay Leno and Letterman and see what they are talking about. I even go onto trucker websites and and tune itno various satelite radio stations, police websites, listen to police scanners on line for ideas etc. poke through forums like this one and see if anything clicks. There are tons of ideas out there; the key is to focus on the ones that interest you, research them if need be and put them in your own words that can fit into a song structure you're looking for.
Good luck....