The sidewalk jumping game — squares chalked and hopped; a theme name carrying the play.
Old English hoppian (to hop, jump) joined to Anglo-French escocher (to notch, score a line), from Old French coche (a notch, groove), of disputed further origin; the game named for hopping over the scored lines of its chalked court.
A theme borrowed for its lightness — chalked squares and a hopped path, carrying play into whatever it names.