When I was a kid, I would lay on the floor and put my feet on the wall and sort of walk-slide myself forward; from that point of view I could pretend I was Spider-Man or a gecko or something like that. I can only assume that’s what he’s doing as well. 
Today I learned my cats will sleep soundly through a (minor) earthquake but if I sneeze all hell breaks loose and I’m a bad mom for disturbing the only nap they’ve ever had apparently