I'm more saying that having your work password be a naughty fantasy involving your coworker is just plain creepy. I've never heard of this. I mean, even having a naughty fantasy involving your partner as your work password is creepy. How can anyone think this is totally normal and appropriate behavior? I know my wife would find it real weird if that was my password.
If you do that, and are starting to feel like other people find you creepy or are suggesting you might be, and you're confused why they think that.. I just don't know what to say. If you were under the impression having such a password is common, I'm afraid you were mistaken.
But, like I said, I'm giving people an opening here.. maybe I'm the one that's mistaken, and naughty sexual fantasies with coworkers as work passwords is a very common and normal choice of password. Presented with such evidence, I'd reconsider.
I don't know if I'm too normal or what, but my gut feeling is that yes it's really creepy. And all these things have different creepiness to them. Thinking a naughty thing is the least creepy. A private naughty diary is starting to be creepy. If it's just a passage in a normal diary, it's not too bad, if there's a whole book just about this one girl it would get super creepy. Making your work password a naughty phrase about the girl working in front of you, definitely super creepy.
Some of those I'd start to consider beginning signs of harassment honestly. The password one, it's like slowly trying to bring to the girls attention your thoughts. What's happening, are you hoping they see you typing it out one day? Everytime you type it do you stare at her and imagine whatever you typed? So ya, if there was all kinds of other similarly creepy small behaviors they'd add up to a pretty bad environment for that girl to be working in.
Just my opinion. Maybe I'm overreacting, but I wouldn't do that, and so I find it very surprising and creepy that someone else does. Are they harmless, innocent, didn't know better, just have a cute crush, nice guys, maybe, but doing something unexpected to me, that I'd never think of doing, is pretty much the defining characteristic of creepy, and it naturally puts me on my guard. It's just strange behavior, and that's scary.
Note: I'd like to hear some replies that are like... oh no, it's not creepy, way more people have naughty passwords or big naughty diaries of their coworkers than you think. I know I do. It's a totally normal behavior, you're the actual outlier here if you never did any of that. Otherwise I will continue to believe this is strange and creepy behavior which warrants suspicion, and possibly a good indicator that someone makes others feel uneasy and unsafe when around them.