The grandboy and I are discussing physics.  Gravity and mass, specifically.  He conceptually understands that mass attracts mass and that’s what makes things fall and stuff.

He also knows that everything has mass (we’ll go into the neutrino debate later on, once I study up on that).

The tree has mass.  The ball has mass.  The dog has mass.  His head has mass.  Etc.

So what does he say when he jumps on a stick and breaks it?

“I don’t have mass today, gwumpa.  Today I have SMASH.”

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