HOW TO STAND ON TOP OF ANOTHER PENGUIN:
STEP 1:First go to http://play.clubpenguin.com/load.swf
STEP 2: Position your cursor over someone you want to stand on top of.
STEP 3:Hold the [tab] button on your keyboard, while clicking over that penguin.
STEP 4:If the cursor turns to a regular arrow then click one more time.
STEP 5: Now you should be on the other penguin.