A combination of the first letters of the following phrase:
Get On Your Bike And Ride
Used in reference (generally when taunting) to either
1) Posers who wander around with Heine Gericke motorcycle jackets yet don't know their clutch hand from their limp wrist.
2) People with motorcycle helmet shaped hair, usually women experimenting with fashionable short hair, but ending up looking like Carl Fogarty's 'slow' little sister.
The new age Vicar did his best to appear fashionable and bring christianity to the youth, sporting a 'trendy' motorcycle jacket and funky mullet hair, he preached on modern issues, however, his appearance was just a ruse, and his motorcycling references fabricated, he was more likely to ride the choir boys than a Harley. After his community started to see through his facade, the elderly parishioners would taunt him before each sermon, mimicking the wrist action of a throttle hand and shouting "Goybar!" from the pews.