A Dirty Patch

The rules are posted on a sign –
The city’s made its mark –
Instructing drivers there are times
They’re not allowed to park.

The streets require cleaning
So at certain listed hours
The sweeper truck comes swishing through
And picks up trash and scours.

But certain selfish drivers
See those rules and just ignore ‘em,
Assuming that there’s little chance
A cop’ll come before ‘em.

And so the sweeper sweeps around
The cars that will not budge,
Thus leaving certain city streets
With detritus and sludge.

Of course, those drivers drive away
And leave within their wake
A dirty patch the sweepers missed
For someone’s selfish sake.