When you were only issued with one pair of No2 trousers.
Less shirts than there were working days in the week.
Carrying your hold all with RAF in dayglo tape on the bottom guaranteed you a lift virtually anywhere without the fear of being bummed or shot.
A call to 7 SQN meant a flight in a Canberra that afternoon.
The Canberra never getting out of its parking space.
The highly trained, paid and Commisioned crew saying, "well lets pretend we're going somewhere" and making engine noises and jiggling around on the seats for a couple of minutes.
When Tennants cans had girls on them
http://www.cannyscot.com/ - collect them all before you die of liver failure. And they were only 30p each.
When Curly Wurlys were so big you could use them as a ladder.
I can confim that the Bone/dogdoo explanation is true. I gave my dog a bone last year and his poo was white. I spent hours looking at it in fascination and getting that warm somewhere else feeling that you get, when listening to an old song for example.