I've narrowed it down to three people, one who's a casual in a different businesss unit and not in most days so they wouldn't know me. I've got a recognisable voice so the other possible two would know. That being said, I did stay in the cubicle staring at a cobweb in the corner until they'd left. Then I waited another two minutes after washing my hands, then returned to my desk with a coffee from the opposite direction to the toilet to make it look as though I was coming from the kitchenette. I wasn't sighted. I'm considering disguising by putting on a husky voice and saying I've got the flu (plus, husky voice is hot). I'm gunna eat my vegemite sandwich at the common table today rather than eating it outside, and see if it comes up as 'goss' during the usual office chit chat.