HOW TO NUB:
STEP 1: First, go to http://play.clubpenguin.com/load.swf
STEP 2:Press F11 on your keyboard.
STEP 3:If you notice a white space under your chatbox where you type on CP.
STEP 4: Click on that white space under the chatbox on CP. Your penguin will go right under the chatbox, otherwise known as nubbing.
HAVE FUN NUBBING ON CP 🙂
Here is a video walkthrough made by Bicyclebell: (Click here)