Se algum clicar, mas isso … Faça isso!

(function($) {
$
(document).mouseup(function(e) {
if($(e.target).closest($someSection).length) {
return false;
}
if(!$(e.target).closest($someSection).length && !$(e.target).is($someSection)) {
// do something... ex: $someSection.removeClass('open');
}
});
})(jQuery);