I didn't realize I would have to say the answers over the phone when choosing the answers (and thought it would only ever be me filling them in online)
The trick is to enjoy confusing humans and share the story of why when you get there. I went to the mall for the first time in a long time, every place wants to sign you up on the mailing list for a small discount. So they can email me at <Name of store>@mydomain this way I unsubscribe and if I see email coming to that address I know which store is the rat. They look confused, ask for 'a real address' well that is a real address I say, and here's why: ...
Me: "ok, but it's some random text: Q 5 --"
CSR: "--yeah, ok, that's fine"
Since then I just make up a random, fake but real-sounding answer so the humans don't get confused.