Tinstaffl
Because most of the world doesn't talk in Q code?
Understandable... but we use them more than you think... QFE, QNH, QTE... there's a full list which shows the origin of the codes at:
http://homepages.tesco.net/~a.wadsworth/Qcode.htm
A bit spotter'ish... some are a bit of a laugh, but promise me next time you're flying by you won't practice them on me?