In summary: NON-VERBAL COMMUNICATION and observe how alpha males behave with other men!(Non-verbal communication accounts for 97% of communication and we women need to remember that men generally don't have a 6th sense like we do. As such, we need to treat them accordingly a.k.a assertive and clear, and not like we would treat a woman we might be having issues with)
Caveat: Below I'm not saying act like a bitch at all. My trick is always to try and imagine the classiest/best version of myself and try to emulate how she would react. It's more about having that air of confidence and self-respect, and ensuring that my behaviour demonstrates that I expect that same respect from them too. Don't try to accomodate their flirting or whatever behaviour makes you uncomfortable. Generally, you're no-one special to them. They just take what you will let them get and putting an end to that behaviour will not make any difference to them. They'll just move onto the next woman who lets them behave that way, so don't stress over it. Men are not like women!!
So - here's how I do it:
I'm a female in my 20's that works in a multi-national company that is mostly males (atm I project manage a team of 18 and there is only 1 other female). Whilst overall I am treated with the utmost respect, I do have to deal with the outliers every so often (3 in the past 6 months - and please note I do my best to not give off the wrong impression and so I genuinely do not believe I am at fault when the situation arises).
As such, my opinion on this has changed over time and this is in part due to my growing understanding of men.
I used to try and deal with those behaviours in a way that accomodated the situation so as not to make it awkward. However, if you've tried that and the guy is still clearly not getting the message my tactic now is to just go completely ice-cold. Not overtly rude, but I literally do not engage them in anything they say that goes beyond the scope of work and or context - and that includes allowing for awkward silences and making it obvious you are avoiding them. Even cutting the conversation short, changing your voice tone and the biggest one - not smiling or laughing when you're uncomfortable with what they've said. Sit in the awkwardness of what they said but don't make it 'too' obvious you're doing it. Just as if their chat is kind of boring and so you're not engaged.
Obviously - I am NOT saying to be mean and or rude but stand your ground. Just don't engage them.
This shock tactic has proved enough for them to stop behaving in that manner with me and even making the effort to be more courteous. In the end, I have a good working relationship with all 3 (and more from all previous years).
I believe that in most cases, so long as you keep being friendly/courteous, the guy will not get the message. They are not like women who have that 6th sense, and we need learn to act accordingly!! Non-verbal communication accounts for 97% of communication so once their behaviour stops eliciting a pleasurable response from you they might start thinking with their heads again and start accomodating THEIR behaviour to the situation. As a result, over time you end up having a normal working relationship and that boundary has been drawn without you actually having had to talk about it.
Takes less time than you might imagine too. Also, if they do end up having a negative reaction, unless they are in some position of power, what can they really do?
Anyone else agree or have anything further to add?