tubeless.
Early twenties ( me, not the era ), I loved my lugged steel, Aussie built, brown thing.
Had more rear wheels built for it than I'd had lady friends. And this was pre AIDS days. Mind you, I never was pretty, so not saying that much.
My mechanic reckoned I was like a three hundred horsepower tractor, with no power steering.
Soo, one evening I've popped down the shop for milk. Pluggers, stubbies and tubeless. Stubbies were the short of the norm at the time. Tubeless means no jocks.
Sorry for that image, but the relevance is coming.
On return voyage, have decided a one handed, milk in the other, coasting wheelie was the go.
My ambition outweighed my abilities even then.
Taco wheel ( borrowed term ), and corkscrewed forks. Fresh bitumen. Very messy. You get the tubeless reference now ?
No milk either.
I was met with a mixture of pity and disgust.