Oh trust me, to me the world would be an extremely awesome and simple place if it was that easy.
In the more sexual relationship I ve have I am continually asked to be e "man" and to not "ask so much" and to simply "take what I want" but the rituals of flirting are weird and hipocritical like most of the popular social rites and interactions (yes, I am very nerdy, thanks for noticing)
About the context, here it is:
http://i.imgur.com/cwSoc.png
I dont think he is talking about legal terms there. He is saying that saying no but acting sexually (acting sexually can be misrepresented to mean mysoginous stupidity or the actual purposeful attempt to seduce the man and flirt so they end up having sex) is a non straightfoward message.
It is easy to give a serious no. Anyone can do it. i know I have done it to sexual advances. I also know if I have used a less clear tone and body language she would have kept at it.
When you are giving a mesage you need to be clear. Saying "no" or flirting can very well just mean "I want you to keep playing"
Mst women I ve asked have said no more than once when they actually just wanted the man to keep trying because they want to feel "wanted" . Its part of the flirting game. You are supposed to know the rules.
I dont even like em. I would love it to be clear and contractual "by that you mean you want me to keep trying? I am just asking once, like which are the specific triggers?" Trust me, most men cant say that and not ruin the mood and most women here feel offended because you are making them feel like "sluts". The woman assumes he is an idiot who doesnt know how to flirt and go find someone else. No, not necessarily a "jerk" or someone that disrespects her, but someone that does read the full message instead of getting confused by the mere wording and playing on technicallities.
If we are going to expect humans to act like robots and follow technical commands on their normal regular life, flirting is the last place where it is reasonable to expect this to happen. It just wont. Sure, some women may think no means no, and sure,y that might be true for themselves but in my experience, most want you to be able to read between the lines.