you might be an engineer if....
...you do donuts in the Hallam tractor (with your towing team in the back) right up to the point when it's about to tip over, and then tell them that if you ever catch them doing it they'll be on gate guard for the next month!
You've proven that the clutch on a Landrover will burn out after towing a Phantom approximately six inches.
You have borrowed an entire USAF F4 while on Det
Your groundcrew are all wearing USAF uniform on the way home from an exchange det because they've swapped all their RAF stuff
Fond memories!