It REALLY grosses me out when you see a server or kitchen staff using a washroom in the restaurant, then they just rinse their hands under water before returning to the job. BTW, if you think men are bad - talk to a few women about washroom horror stories. Most women I know say that public women's washrooms are usually pretty disgusting. Worst story: in a big 5 banking office in one of the higher floors of the black towers downtown (try to guess the bank... LOL) I was told by a couple people about a repeated incident where there was toilet paper all over the seat, with footprints on the paper and SHIT on the back of the seat. They guessed that it was a visitor or newer overseas employee who was not used to Western style toilets (which are considered unsanitary vs the squatters you see commonly in Asia). So this woman must have climbed up on the seat to squat, but missed her mark.
Oh, and I still laugh about the story in the MPA section from a guy who got into the room, had to crap really badly - so he did it in the shower and squeezed it down the drain. Can't remember the guy's handle, but still laugh about it - even if it was likely BS....