Make sure you feed the Bank Bomb from ThinkGeek “or it will get cranky and explode, spilling your hard-earned dough everywhere.” Video demonstration after the break. Click here for one more picture.

Just set how sensitive you want your bank to be (i.e. how many days it will let go by before getting mad), and start saving. The Bomb Bank also has a “Party” mode, which is a sudden death type game. After you adjust the sensitivity, each person takes turns putting in a coin. If you are the lucky person who puts in the coin that “explodes” the bank, you win all the coins