Anybody can be president

Overheard this on NPR's great show "Wait Wait Don't Tell Me."  Their guest was somebody (I never found out who) that grew up in a strong Irish Catholic family in Boston.

He was asked what he thought about Obama winning the election, and he said (paraphrased as best I can):

When I was in school Kennedy won the election.  The nuns at my school told us that this mean anybody could be president, anybody.  So I went home and told my Dad this and he said "yes, it's true, anybody can be president."  And I said "so that means I can be president!"  And my Dad said "You?  Pffff!  What are you crazy?"