Unintentionally Obscene Billboard
Or, perhaps, intentionally obscene? For an organic grocer in Rockville, Maryland.
I have experience in this area.
One of the ad agencies I worked for shot a walnut up close for a print ad, the product is inconsequential.
This strangely square walnut looks like a combination of male/female genitalia, I think.
The headline doesn't help any.
Perhaps—even probably—the client/agency knew exactly what they were doing.