I believe part of the problem is that a good many men don't seem to have had the experience of being creeped out, so they're guessing about possible patterns.

I'm glad you mentioned this.

I'm male and have experienced this form of creepiness on at least two occasions. That is, someone aiming for unwanted interaction and being unwilling to go away. One was a woman who had gone off her meds and become suddenly convinced I was her partner (my actual partner, standing right there, was not amused). The other was an ugly old woman who was overly insistent on keeping my attention. "Skin crawling" is probably a good way to describe my reaction.

But it doesn't happen frequently, and it isn't something that readily comes to mind. This is why I'm glad you mentioned it: I've been unwittingly creepy on occasion without understanding how exactly. Introspection has amounted to literally guessing at possible patterns. Explicitly searching for examples from my own experience at your prompting just triggered a pattern-match. I am now less confused. Thanks.

[Edited for clarity]