killerman,
For example take an employer telling off an employee playfully for chatting too much with his coworkers. The employee will probably do it again because the employer told off the employee in a fun light hearted kind of way and the employer didn't really show his authority. Also the employee didn't feel like his job security is threatened. Then compare it to the employer telling off the employee in a very firm, takes no bullshit kind of way. Who will the employee listen to? The first fun playful guy? Or the take no bullshit kind of guy?
Neither is going to work long term and ill explain why, but first we need to remember a fundamental rule.
People do things for their own reasons not yours
So, in order for them to stop what they are doing, they have to understand
why. You need them to make your reasons......theirs.
Here's how I handle it at the office using your "chatting too much" example
1) Explain to the employee why he needs to stop talking, and get him to agree that chatting as much as he does is not conducive to being productive. You don't need to threaten. You don't need to judge. All you are doing is explaining the why and winning them to your side. Leave emotion at the door even if you are frustrated.
2) If they do it again all you have to do is tell them to stop. You don't need to explain why, because they already know. You don't need to judge, you just need them to associate too much chatting with feedback from their supervisor.
3) Next "Hey XXX, they excessive chatting needs to stop otherwise "insert punishment here". Then make sure you do it if they continue to be uncooperative. If you give them an inch they will take a mile. At this point they will understand there will be repercussions to their actions. Most businesses have gradual escalations from here.
Like you said the cool guy who says "come on dude stop chatting so much... haha" will not be respected, but neither will the no BS guy. The no BS guy will have results short term, but employees will begin to resent him and either move on, or rise up. The decision is his not theirs and respect is earned not given.
How does that apply to women?
Obviously you don't have the time to go through the entire process with every girl you meet. So you shorten it based on your level of investment with the girl and the level of disrespect she is giving you.
Lotus