The Week In Pop: In Praise Of Wiz Khalifa's Polarizing Pop Career

Some rappers tell jokes, others are jokes. (Big Sean, that lovable cornball, is an amalgam of the two archetypes.) Ever since Wiz Khalifa floated on a cloud of kush smoke from the mixtape underground into top 40 rotation, Pittsburgh’s most famous MC has been in the latter category — a laughingstock among self-proclaimed real hip-hop