Yeah, I've heard it described as the Shark Tank defense. If you're willing to jump into a tank of sharks rather than perform this act, it's almost certainly the wrong choice. You wouldn't jump into a shark tank if you dropped your wallet, so murdering someone over a wallet is a no-go. Maybe you would in a life-and-death situation. If you can't convince another person of sound mind to perform the same action, defending it in court is gonna be real difficult.