This is purely for my own amusement, but sometimes when replying to a work email in a chain (or sometimes in a straight reply if I’m really brave) in the past, I’d change the job titles of people who annoy me (or I don’t like) in their original email.
People rarely realise that you can edit the signature line in the original email, even though most people know you can edit the body text. Or if they do know, they’d never check because why would someone do that?
I don’t tell anyone. It’s just a form of amusement.
It’s a risk but worth it.
Obviously I no longer do that.