How quick we are to cast the first stone.  I believe he was using this thing called humor when he was referring to lighting up a blunt, however, I do agree that lying is not the best way to start a career in LE, but had he not ommitted the drug use as a teen then he would have no chance for a career in LE anyway.   I don't understand why people can't accept the fact that a person as a teenager and that same person as an adult are two completely different people.  Granted I always kind of knew I wanted to pursue LE as a career and avoided drugs with the exception of Marijuana which I tried as a teen and knew right then and there that drugs were not for me, but many people had no clue what they wanted to be or even who they were as teens.  Some of the best officers I have worked with were not ideal teenagers, but made a change for the better.   Departments that automatically disqualify candidates for using any drug no matter how long ago it was used have got to have the dumbest policy I have ever heard.
Anyway, I wish everyone the best of luck in their pursuits in LE and hope this guy is one of those exceptions and proves people like Public Servant wrong.