You Can Mail Guns -- And Poop! -- But Not Pot Ads

Baby alligators and day-old ducks can be mailed, but probably not together.

Poop and potatoes are fine to send in the mail. But pot ads? No. They’re banned.

The U.S. Postal Service clarified on Thursday that it’s illegal to mail materials, including newspapers, that feature ads for marijuana products -- even in states where the drug's been legalized, The Associated Press reports.

So pot ads join airbags, ammunition, explosives, gasoline and pornographic materials on the prohibited list. 

But fear not -- we can still send these truly bizarre items in the mail: