I think one word there kinda says it all - you're Finnish.
Yep, but these stories were not
. So it would seem to me that these things are overall quite universal, even if there are cultural differences (like flirting in some countries is more daily than in others, or in some cultures women stay at home and use veils).
Or was your point that the lady should not be offended if _at his work_ a male "colleague" does not keep it at professional level, but takes it to, what to some is an awkward, unprofessional "Mmmm, I'm a man and you are a woman, meee likeyyyy!" level? Because that's what you just should tolerate, if you are American? Apparently that lady still disagreed for some reason.
In the potential sexual harassment cases, I think it is simple to draw the line: the one who for any reason feels offended should let the other party know about it, and right at that point the other one should stop. Not even continue "Come on, little flirting never hurts anyone, aye? I should be able to tell someone if I like what I see?". The continuing part is when it becomes harassment, even if it happens on a different day.
Common sense of course: if someone e.g. doesn't even want you to be in the same room with you for some odd reason, he/she shouldn't tell you to leave, but leave himself/herself. As long as you don't follow and try to continue it.
So in that sense, the guy with the booth babe remark didn't commit anything like a sexual harassment. But I feel he was possibly unprofessional with his remark. Hard to say for an outsider of course, would have to see the situation yourself (like, if she was indeed wearing sexy clothes that would seem only crave for attention; in that case it is actually she who was being unprofessional ;)).