Postman just delivered a parcel, so had to knock. But he didn't just knock. He performed some sort of military parade drumming accompanied by ringing the doorbell! Obviously he doesn't know there's a restless baby in bed and a pregnant mum pulling out her hair for a bit of rest, so I was polite and didn't scream at him like I wanted to.
AIBU to put a sign on the door saying 'Please knock quietly. If you wake the baby, I put you to sleep' Too aggressive?