@Fru@ - Yeah, that outrageous sense of entitlement is an issue all of its own! As to whether she did it at home, who knows, but the original "phantom shitter" concept reminded me of a previous MN string starting with somebody AIBUing to expect cleaners, at £14/hr, to not have a "no toilets" policy.
I have another colleague - from ages ago. He was a columnist in a weekly newspaper, all kinds of issues: thought he was god's gift, constantly sexually harrassing, frequently drunk. When he eventually got sacked, he stormed about the place proclaiming that the [ethnic] community [that the paper served] will be rocked to its foundations!". (It wasn't, and it took him a while to get another job at a lesser paper).
OK, still not odder than most of the people I've read about here, but I'm rather proud of this next bit: one day he was showing off how much money he had in his wallet. Fortunately he took a while going around the room so I had time to think up a stinger.
"Look, I'll bet you never saw 1,500 in a wallet before".
"No, Mike, not in somebody else's wallet".