No profound symbolism was intended here, just some humorous scripting from Michael. BTW, if you're old enough / young enough to get the joke here, let's keep it a secret from the whippersnappers / old fogies that don't get it, K? LOL.
If you're between the ages of 35 and 55 snd STILL don't get it, there's a clue that's about as subtle as a sledge hammer in the background behind Michael. ;)