The audience cheering so loud at the Al Hirschfeld Theatre that it drowns out the noise of the traffic on W. 45 St. has turned a loud, vulgar, mediocre drag show called Kinky Boots into an unqualified hit. How I wish I could join the applause without reservation, but what they've done to cheapen, coarsen and knuckle-sandwich the freshness and charm out of the delectable 2005 British film it's based on shouldn't happen to a sequined jock strap.