Do You Remember?

[Innuendo]

anyway yep looking at that now, thats the one - pop top. I could never see how the pop was supposed to work

You were meant to push the smaller one first to release the gas pressure; then the larger one to drink from. Opening up the smaller one allowed the fluid to flow faster out of the drinking hole. I remember some having so much pressure it was impossible to open the small one - especially if some bastard shook the can!

Another image I have from the 70s is ring pull chains

Yes, ring pull chains were made by myself and brother every summer and every easter at Merry Beach on the NSW South Coast. All the men would down dozens of Toohey's cans each everyday (seriously) and as kids we would collect the ring pulls from the around the camp fire. On the big nights they would have a keg and that's where I learnt how to pull a beer as a kid.