Some DINKs are GINKs, and we’re betting a lot of GINKs are DILDOs. That is, some Double Income, No Kids couples are also Green Inclinations, No Kids couples — and where there are Green Inclinations, there is often a Large Dog. And if you’re a Double Income Large Dog Owners couple … well, you know what that means.
(Of course, if you have Green Inclinations and are also a Large Dog Owner you’re technically a GILDO but we’ll pass lightly over that.)