Hi,
What does "*** up a rope" mean? If you literally try to do this, you will quickly discover that it means 'Do something that is obviously stupid and impossible'. It's a way of telling someone to go away, that you strongly disagree with their opinion or advice.
Whan you are really irritated is *** up No, sounds odd or *** off used, Yes, common expression
is this a really vulgar word? Your opinion about this depends on a number of factors, including your level of education and your age. For example, this used to be something that was never heard on TV, but now it has become quite common. It's said so often by some people that they wouldn't even understand why other people might think it is vulgar.
So we don't have to use it often! right? I wouldn't say it to the Queen of England, or in a job interview or business meeting, or to my wife (or to anyone, in my case). My advice to you, as a learner, is not to say it. Not only is it not necessary, but also you may accidentally say it in an inappropriate context. So, safer not to say it.
Best wishes, Clive