Occasionally, it is unwanted for users to be able to send Ether to a smart contract. Unfortunately for these circumstances, it's possible to bypass a contract fallback function and forcibly send Ether. The first method is to call the selfdestruct method on a contract with the Vulnerable contract address set as the beneficiary. This works because selfdestruct will not trigger the fallback function. Another method is to precompute a contract's address and send Ether to the address before the contract is even deployed. Surprisingly enough, this is possible.