Hallway Glide

I rolled off the edge of the desk rug onto the long hallway floor! Whirrr! The tiles stretched out straight and shiny like ice. I pushed with my round hands and let my little caster wheel spin freely. Zoom! Halfway down, my red shoe bumped a stray wooden domino left on the floor. Clack! It tipped forward, tapping the next one, then the next—clack-clack-clack! A whole neat line went tumbling over in a rhythmic ripple! Beep-chirp! What a fine accident!