It's become a odd little writing mantra for me, shorthand for the project of striving to load stories down with Neat Stuff, to reward myself and my readers with goodies, surprises, new amusing events and people and objects and ideas in play. Velociraptors with hoverboards don't need to be plot-necessary, don't need to be plausable, they just need to be ridiculously awesome. Which they are.
Certainly there are pitfalls to going too far in that direction. But, I'm working to remind myself, that's what second drafts are for.