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One variation is the "half monkey pedal" where said eng bai is too puski to complete a full revolution and simbly oscillates the pedal back and forth to get enough forward momentum
Why monkey pedal? probably because the entire operation looks like a circus act by a monkey..Anyways, we asked Jane Goodall and she said she had never seen any monkey ride a bicycle let alone do all these gymnastics...
Dad: Why can't you use our Hercules bicycle? Why do you need a new one?
Eng Revi: Because I look stupid doing Monkey Pedal like one Circus Korangu
Dad: Go and drink Complan and grow tall. Then you don't need to do monkey pedal