first you have to make a invisible tile as a spike
then put the card in the "object".
then enter the water level with bubbles and a half to 'water to enter the invisible tile.
so when Husband goes in contact with the water it loses power ups.
bubbles are used to give the idea that water is hot

Removing duplicate thread.

http://nsmbhd.net/thread/3781-how-to-create-the-boiling-water/