The phrase "twisty roads" refers to a type of road that has many sharp turns, bends and curves. These types of roads are often found in hilly or mountainous areas where the terrain is uneven and there may be obstacles such as rocks or trees that make it difficult to build a straight path. The term "twisty" suggests that the route is not straightforward but rather winds and turns through the landscape, making for an interesting drive with many changes in scenery.