Function with properties.

gistfile1.txt

function MehBuilder() {
    // Ok... using an array b.c. strings are immutable.

    var foo = Meh.foo = ["derp"];

    function Meh() {
        console.log(foo[0]);
    }

    return Meh;
}


var m = MehBuilder();
m.foo[0] = "dartvader";

var n = MehBuilder();
n.foo[0] = "homer";

m(); // dartvader
n(); // homer