displaying `shape` values in `ggplot2` plot annotations

I want to display the shape value (shape argument for geom_point function) in the plot annotation.

Below, for example, I am just writing 'point shape' where I actually want the shape itself to be displayed. (This is a minimal example of something more complicated I want to do.)

Is there any way to do this?

library(ggplot2)

ggplot(mtcars, aes(mpg , wt)) + geom_point(shape = 7) +
  labs(title = "'point shape' represents data point")

^{Created on 2020-01-30 by the reprex package (v0.3.0.9001)}