On the home page, at the bottom is the community feedback link. Hit that and you will find a sticky at the top of that page.
You will find every acronym you can think of!
You know, until I found that acronym stickie years ago I had surmised it stood for Distinguished Son/Daughter. With all the accomplishments of these kids it made perfect sense to me!
I thought it was "darndest" daughter/son. Notice there is no ironic emoticon.