I think you need to read my post again, I'm not talking about real ethics or so-called Christian ethics. I'm talking about doing what's in your selfish best interest. Put simply, don't do things that can be used against you by your enemy.

Maybe it's my hyper-legal American sentiments (pardon the joke at the expense of America's litigious culture, if that's not your particular breed of sardonic humor), but I'm in full agreement here and a little surprised at some of the comments waving this off as anything other than something that would result in justifiable legal-reprisal, if the landlord really wanted to mess with people.

But again, that's probably (very most likely) just the result of me existing in a hyper-litigious culture where In pari delicto is very much a thing.

Right, but now he's telling his mates about how his absolute arsehole of a tenant spread marmite on his letterbox for no reason whatsoever. He still has a story, except this one just makes tenants look evil.

Yeah, but let’s be honest - if he does mention the deposit though - his mates will quickly understand why the marmite ended in his letterbox.

So in the end we’re not giving any ideas to other people that their actions will have no repercussions.