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diff --git a/samples/call_method.js b/samples/call_method.js
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+/* shows how to use call() and apply()
+ * essentially give a method called .bar(), instead of calling it directly with
+ * use of dobule parens we append .call(instance [, arg1, arg2, ...]), where
+ * apply takes array of args
+ */
+
+function foo() {
+    this.tag = 'bar';
+    this.bar = function(txt) {
+        console.log(txt + this.tag);
+    }
+}
+
+var bar = new foo();
+bar.bar('foo')
+/* first arg of call is the class instance, could be 'this' if we were in one */;
+bar.bar.call(bar, 'foo');
+/* apply is similar but it accepts on array of arguments */
+bar.bar.apply(bar, ['foo']);
+