Back to nicknames. At Gatwick in the eighties a certain airline had been operating the Shorts 330 and had just received its first 360. Tower was handling the new arrival and a company 330 at the same time.
The 330 called the tower " XYZ123 a Shed passing the marker"
Tower responded "XYZ123 continue, company Portakabin to roll"
XYZ123. "Why's head office on the runway?"
"XYZ2240 to the 123 WE are the new 360 - and the Chairman is in the cockpit"
After a long silence Tower called "XYZ123 down at 23 and *** are advertising for Shed crews in Flight this week"