I suspect Chugalug(1) was like me, ex Dan-Air. Anyway I was told it was not available when I registered with PPRuNe, but (2) was offered instead. Chugalug was a discreet R/T greeting by us to Maastricht ATC, having been created by our very pro-active Ops Director and staff. In a number of memorable 'liaison' visits to them, involving much quaffing of best Scotch, etc, the phrase was coined. The response was invariably "Chugalug, Dan-Air XXX, you are cleared direct to the Frankfurt VOR", or wherever. Direct routings were the prize for all this, saving time and money. Happier days, when initiative was rewarded instead of bringing down PC strictures about correct procedure which would be the result these days, no doubt!