Being in tech support, I can see a user's username and password. Sometimes, these are quite amazing considering that often users will contact us because they can't remember them.
I've found usernames and password that are based on obscenities.
I'm dreading the day when I get a call asking for a password and I have to tell the user that it's something like "f___you."
I had a user once whose son set up the user profile. The guy couldn't remember the username, but remembered enough of the password to stop me from spelling it out so I could change it for him. It was something like "lovetits."
It irks me. Oh, well, it's just part of the job, I guess.