Its a joke because the clock running is not synonymous with action. Yet by the self-serving definition of hockey and soccer fans the whole running time of the game is considered action, but substitutions, changing formations, men in motion, and extra points in football are not. Endless and fruitless passing back and forth, the goalie waiting for his teammates to get ready before inbounding the ball/puck, the puck gliding down the ice until icing is called all count as action but only the time from center snap to tackle gets the same definition in football.
The running clock in soccer is one of the dumbest things in sports. Football and soccer share that one stupid characteristic -- where the clock runs even when there's a stoppage in play and nothing is happening on the field at all.