first go to your igloo

now go far away from your igloo door

now go click on your igloo door

wile your walking to your door click on the edit igloo button (measuring tape)

when your map pops up click on someones igloo

now u can move stuff around (but it doesnt stay thate way but the people can see u doing it!) 

ok first go to play.clubpenguin.com/load.swf

then press f11

now login normaly

now press on that huge white part at the bottom

and thats nubbing!