Act like you're dancing

The other day, when we were having a fancy dress disco ball with the family, my son interrupted his crazy dance moves to say, "Hey dad, here's another paradox for you: 'act like you're dancing!'". Spot on: you can't pretend to be dancing without, in effect, being engaged in an act of dancing. That would only be possible if you kept perfectly still, but then, that wouldn't count as pretending to be dancing.