af5.js

// Problem with the current way. Closures explode!!!
function Aaron(){
    this.favoriteSaying = "I love Google!";
    this.saySomething = function(){
        console.log(this.favoriteSaying);
    }
}
var a = new Aaron();
a.saySomething();     //logs "I love Google!"

function Speaker(){
    this.speakForSomeone = function(speakMethod){
        speakMethod();
    }
}
new Speaker().speakForSomeone(a.saySomething); 
//logs 'undefined'