Is this an idiom: you don't form in the wet sand?

[Torsten]

Hi,

Have you heard or used this phrase before: "You don't form in the wet sand." Does it have any idiomatic meaning? I've come across it in the Red Hot Chili Peppers song by the same name:

My what a good day for a, walk outside
I'd like to think we did it for the (better of)

I thought about it and I brought it out
I'm motivated by the lack of doubt
I concentrated but I'm not devout
The Mother, the father, the daughter

Oh you don't form in the wet sand
You don't form at all
Woah you don't form in the wet sand, I do, yeah

You don't form in the wet sand
You don't form at all
Woah you don't form in the wet sand, I do, yeah!
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[Mister Micawber]

.
If it is, I've never heard it; and I certainly don't understand it. It appears to be an original metaphor created by the RHCPs. Here's one on-line exegesis:

wet sand... hmm, it's like he's saying that most people can't build their lives and mature whilst constantly moving, like wet sand does, convulsing to any pressure, but he feels he has, and he needed that time of constantly changing and moving on to become what he has today? kinda works...
.
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[Lost_Soul]

Hi,
I know that quicksand if formed of wet sand, watered by underground streams. Wet sand is unstable substance because water lessens the friction between grains.