Whether mangling words, obliterating a famous cliche or just saying something weird, President Bush has injected occasional awkward moments into many public appearances, typically leaving listeners with quizzical looks on their faces.

The president recently told an audience at a Nashville school: "We're trying to figure out how best to make the world a peaceful place ... there's an old saying in Tennessee - I know it's in Texas ... it's probably in Tennessee - that says, fool me once, shame on ... Shame on you. It fool me. We can't get fooled again."