Not exactly the same signature, but can handle arbitrary number of calls.

var say = (function() {

    var savedArgs = [];

    return (function recurse () {

        if (arguments.length) {

            for (var i=0, arg; arg=arguments[i]; i++) {

                savedArgs.push(arg);

            }

            return recurse;

        } else {

            alert(savedArgs.join(' '));

            savedArgs = [];

        }

    });

})();

// e.g. say('Hello')('World')('!!')();

// --> alerts "Hello World !!"