I know exactly what it means...but show me where that appears in the constitution...
More importantly what do you think "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof;" means?
It does not necessarily mean "seperation of church and state."
It means Congress cannot make laws establishing religions or prohibiting your right to practice whatever religion you choose.
The pledge of allegicance is not a law...no one is forced to say it and just like in a court of law you don't have to swear on the bible you can always change the words of the pledge.
Now forcing children to say the pledge is a whole other concept.