A chalk talk is a venerable on stage event performed by cartoonists or illustrators. Winsor McCay of Little Nemo fame, was one of the best with his pioneering Gertie the Dinosaur, part drawing, part animation.
This isn’t that kind of chalk talk but rather lettering perfectly drawn to suggest it was done with chalk. It’s what I call “typography parlant,” or type that speaks to its function. This is a great example of this talking typographic phenomenon.
Designer Resource: Shadow Type
For even more on type, pick up a copy of Shadow Type: Classic Three-Dimensional Lettering by Steven Heller and Louise Fili. This beautiful book includes more than 300 historical examples of typography that will inspire you and delight your eyes.