Abbreviation for All Gear, All The Time. This is a common mantra for bikers who insist on wearing their protective gear in all conditions, no matter how uncomfortable it may get.
A person who adopts the persona of a biker without really knowing what they’re doing. Full discussion here.
A derogatory term for a person in a car, insinuating that they are not free but in a cage.
A interstate highway or any other four-lane (minimum), divided, limited access highway. Usually shunned by motorcyclists, but a necessary evil if you have to get someplace fast.