Let me tell you of a far-off distant land, a land of wild storms and wind and rain. But it doesn't rain down frogs and jellybeans like it does here, oh no no no! Instead it rains down "water"! And when it touches you it clings to your body from flipper to beak! It soaks into your clothing! And it stays that way until slowly; so very slowly, the "water" just disappears back into the atmosphere! Poof! Really! I couldn't make this stuff up!
Imagine an infinite number of alternate dimensions, sliced thin like salami and all layered together in a delicious sandwich of universes. In these parallel strata of time and space, the Squishables are very, very different.