Your chewing gum loses its color on the sidewalk overnight.

Which is more difficult to deal with: fresh gum that sticks to your shoes or the old stuff that appears to be part of the pavement? It never occurred to me before that those quarter-sized black marks on sidewalks are gum fossils.

Mexico City, San Francisco and other locales have made the news because of efforts to rid their walks of ABC gum.

"The city does not consider errant gum-chewers responsible for cleaning up gum-spattered sidewalks." No, people who spit their gum out on the sidewalk are not what I'd call responsible, either. They can't even walk and chew gum at the same time.

I wonder how long before monthly use of sandblasters takes its toll on the sidewalks. Perhaps spittoons will make a comeback. Although who'd want to clean one of them?

If local governments were smart, they'd get their city attorneys to band together and go after gum manufacturers. Instead of a tobacco Master Settlement Act, they could get a chicle Masticator Settlement Act and use the windfall to buy Gum Wizards.