The pre-teen hysteria caused by the Jonas Brothers has been compared to Beatlemania -- so we challenged the boys, who weren't even fetuses when the Fab Four were huge, to name just one -- ONE -- of the Beatles.
It didn't go well ... but we're just surprised our photog knew all three Jonases by first name.
Jonas Bros Blow Off Beatles
8/18/2008 4:10 PM PDT BY TMZ STAFF
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