Study shows colorblind subjects have difficulty judging rocking chair usefulness

Is this code for something else?

I am red-green color blind. If given the choice, I will choose a rocking chair every time.

When reading the questions they asked...

> whether they had a sugar baby now, whether they had made cradle-rocking plans for after they're gone, and about the rocking chairs themselves.

I'm confused. A "sugar baby"? Are we talking about a younger woman who is financially dependent on her "sugar daddy"? What is a "cradle-rocking plan"? Is this like "robbing the cradle"... another old guy with younger girl thing?

What does any of this have to do with rocking chairs? Is this some kind of fetish code I'm unaware of?

Shortened title due to length limitations.