You don't have to take mind-altering drugs to choose codenames for U.S. Presidents and members of their families...but it probably helps:
http://www.chicagotribune.com/news/local/chi-secret-service-code-names-obama,0,2687400.story (McCain so wanted to be "Maverick" that it almost hurts.)
Postscript: Watching Jon Snow talking into his sleeve, whilst he regurgitated this story for his Channel 4 News sign-off tonight, was hideously embarrassing.
Retire now Jon, before Krishnan loses his cool and greases your stairs.
You're f*cking past it and you know it.