but if you will take a look at @ 2 just as simbolic expression, then joke would make sense.
BTW, it is still possible that some piramids were build by Jews during the piriod of those 400 years. Dating may be off or new discoveries might come into light. Who knows.
P.S. Mubarak will go down regardless of whether Obama wants this or not. It was never Obama's choice to begin with. I became convinced of it yesterday when after his statement Mubarak instead of sitting the rest out desided to go on offensive. His stupid arrogance became his undoing.