Progress

Here’s how it works . . .
     The first blade pulls the whisker away from your skin, allowing the second blade to cut it even closer, before it snaps back.

The third blade scrapes away the years that have passed since you could still sport a few days’ growth and not be mistaken for someone who lives on the street and shaves when he can.
     And the fourth blade is for everyone who needs to shave four times faster than their grandfather did, one-third closer than those poor three-blade schmucks, and anyone who upgraded to the five-blade system the moment Gillette released it.

Inspired by another story entitled Progress. Image from this Trac II commercial from the early 1970s.