The Thiccctionary

The dictionary contains an unusual concentration of vehicles. The cement mixer. The F-450. The Boeing 747. Several more on the way. We aren’t cataloguing vehicles because we love trucks, we are cataloguing them because vehicles are unusually good at being thiccc, and the reasons are anatomical.

This is a field guide to the parts. Five of them. Once you know what to look for, the next vehicle you see will sort itself.

1. The wheelbase

Wheelbase is the distance between the front and rear axles. Long wheelbase, generally, means heavier-duty design. A Land Rover Defender 110 has a 110-inch wheelbase. A Ford F-450 dually crew cab is up to 176 inches. A semi-truck tractor is around 240. Each of these adds about a body length per category, and once a vehicle’s wheelbase exceeds the average parking-spot length, you’re in thiccc territory.

The wheelbase is the foundation. Everything else stacks on it.

2. The aft

Aft is a marine term, it means the back. We use it for vehicles because "rear" is too neutral. The aft is where most thiccc vehicles do their best work, photographically. The 747’s aft is its tapering empennage and tail cone, photographed in three-quarter rear at golden hour. The F-450’s aft is the dual rear axle. The cement mixer’s aft is the drum, sitting at its 15° angle.

The rule: a thiccc vehicle’s rear is more interesting than its front. If a vehicle is being photographed from straight on, you are missing the actual entry.

3. The dually

"Dually" is American for "dual rear wheel", four wheels on the rear axle instead of two. The math is simple: heavier loads need more contact patch with the road. The contact patch is the rectangle of rubber actually touching the pavement. Doubling the rear wheels approximately doubles the patch.

Aesthetically, the dually does something else. It widens the rear visually. The vehicle’s back end becomes broader than its front end, which is a posture trucks borrow from animals, quadrupeds with heavier hindquarters. The Ford F-450 reads as thiccc partly for this reason. Same chassis with single rear wheels would not.

If you see a pickup truck with four tires across at the rear axle, you are looking at a vehicle that thought about its silhouette.

4. The cargo bay

For most vehicles, cargo is incidental, it goes in a separate space behind the cab. For thiccc vehicles, cargo is the silhouette. The cement mixer’s drum is its body. A propane truck’s tank is its body. A garbage truck’s hopper is its body. The chassis is just the thing that holds the cargo upright.

This inversion, cargo-as-form rather than cargo-in-form, is what separates a truck from a thiccc truck. A pickup is a truck. A pickup with a 30-foot drum mounted to it would be a thiccc truck. The category is about whether the cargo is willing to be seen.

5. The kin (marine and aerospace cousins)

Vehicles don’t stop at the road. The TI-class oil tankers we mentioned in our industrial-scale piece are 380 meters of marine thiccc. The Boeing 747 is 70 meters of aerospace thiccc. The Caterpillar 797 mining haul truck stands 24 feet tall, with tires that are 13 feet in diameter, and qualifies as a vehicle by the strictest possible definition.

What unites them: each of these is a vehicle whose proportions exceed its category’s baseline by a meaningful multiple. They earn their thiccc status by being bigger than they have to be, and then earning that bigness by doing work no smaller vehicle could.

What this means for the dictionary

When you see the word "vehicle" in a Thiccctionary entry, the editorial board has already checked at least three of the five anatomical features above. We catalogue vehicles whose wheelbase is unusual, whose aft does the work, whose dually or drum or tank dominates the silhouette, and whose category-multiplier earns the entry.

The point of this article is not so we can write more vehicle entries, we will, but slowly, and with care. The point is so that when you see one in the wild, you have language for what makes it thiccc. Wheelbase. Aft. Dually. Cargo bay. Kin. Five parts. Now you have it.

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