I assume it's funny to everybody else but my tiny little pedantic mind can't see the joke!
You know the moving sidewalks at airports? Imagine being behind somebody
just standing on the sidewalk (and filling up the full width so nobody can pass) when you're really in a hurry somewhere. This joke is
somewhat related to the frustration in that situation.
Also: Now I can't stop imagining standing behind you, watching you move the mouse pointer
slooooowly over the screen to press the COPY icon. All the while my mind is screaming "CONTROL+C! CONTROL+C!!!"