Humorous play on the acronym GRC, the French abbreviation for the Royal Canadian Mounted Police. Used in reference to the rural backroads where their Officers tend to patrol.
"Damn gravel road copsalways jackin' me up. This is the 3rd ticket this month."
real scientist: i can't believe people pay these gravel monkeys to play with dirt gravel monkeys: oooohh aahahaaoooh aahah *plays with dirt and gravel*