I tumbled forward from the unexpected push. I helplessly watched as I fell into the roiling sand. I could hear Maxine laughing as I hit the sand, but I was surprised that I didn't smack into the sand.
Instead, I fell into it, like what you always imagined clouds would feel like, soft and fluffy but with the viscosity of syrup. No sand went into my mouth when I was down under the sand, but I dare not open my eyes. I tried swimming and found it was easier than water to swim up, though it almost seemed like the sand assisted me as it moved around me.
As my head broke the moving sand, I could hear Maxine giggles close. I went to move my hands to wipe my eyes off as I would with water, but no sand was there to wipe. I opened my eyes to Maxine's naked body sliding into the sand and then under, disappearing.