The term bogger comes from chavs saying that the chains that hang off them make them look like a toilet chain. and therefore a bog-chain.
Skater: "I listn to a wide range of music and need to be able to skate freely, cut offs and skate shoes are best for me"
Bogger: "Im into rap metal and want to associate with that scene, but need to be able to skate well. Hang on a sec this might just work"
They will also regard towns like Navan as " the big shmoke"
Bogger is an extention of the word Bog, as in seat, as said motorcycle frame design resembles a latrine. Therefore the rider becomes a 'Bogger'