if you don't have money on a vending machine while you are on a zombie apocalypse ....you say "I don't have enough money"??? or just break the glass and take what you need.
How to kill the tank bunny : 1.throw a grenade on the tank 2. when the grenade explodes the little bunny will appear 3.shoot the hell out of him (if he get into tha tank again repeat the process)