Stephen Colbert put his pop music critic hat on his no-longer-shaven-head last night in a MeTunes segment, trying to determine the name of the song of the summer he needs to shout at people to turn down. Colbert on Jerimih's "Birthday Sex": "Brilliant! The easiest way to make a song popular is to make the title two things everyone loves, in this case "Birthday Sex." But could have easily have been titled "Ferrari Snowday" or "Cupcake Reacharound."" Jerimih plays the Susquehanna Bank Center in Camden tonight, with Lil Wayne, Young Jeezy, and Drake.