Growing up in the late 60s/early 70s there were some neighborhood kids who rode Schwinn Orange Crates and the like (Orange, Apple, Cotton Picker/Peak Picker). These were original Sting-Ray style bikes with high-rise handle bars and banana seats, plus a much smaller front wheel with an old-fashioned mono-shock front fork. The front wheel had an internal drum brake which apparently made it easy to do "fronties".