Ugh!!!!!!!!

There's this guy, that in one of my work things I do, has been getting ever so slightly on my wick. For privacy purposes I will call him "B".
B was alright to start off with friendly, likable, but now I find him irritating and incapable of using any intuitive. Once hes finished doing something at work he will stand there watching me do my job for about 10 minutes until he can be bothered to help me.
Every time I want to have some chat WHILE we work, he has to come over to me, and mishears what I say about hundred fecking times in a row, until I want to throw something at him. This also means we're behind work, and means we'll be having a later lunch, of which during the morning we are starving.
Also when I ask him to do something, because I am busy doing something else, or wont have enough time to do it, he gives me this stupid grin and goes, I'm staff, your not. Now I'm not asking B to do something outrageous or fobbing off my jobs on him. No, generally I ask him to do it, because hes just standing around watching me, or has finished all of his jobs. In the end I end up making time to do what I asked him to do for me as a favour, myself, or our boss person ends up asking B to do exactly what I did half an hour ago.
Another thing that makes me rage about B, is the fact if anyone he knows turns up, he will go off to talk to them for ages leaving me to do all the work, or when he gets back I end up having to remind him what he is doing. Now as well as this being annoying what gets me is how he has been working at this place for just over a year, where as I have only been working there more than 3 months. Why is it that I am the person keeping him in check when normally is should be the other way round.

B also annoys me as a person as well as someone to work with. Now this may seem petty to you, and it is, but after a long mornings work, when we finally have something to eat, the last thing I want is to be in the same room as a person who is eating with their mouth wide open and smacking their lips all of the time while eating. So to combat this I try some conversation, which also fails. For when a person doesn't know who Oscar Wild is, who Tim Minchin is, who in total, only knows four comedians, and hates reading anything, has no modesty, who's also, vocabulary is quite limited, to phases like "Oh my days" and "that's so odd" and repeats this every time something a little deterring happens, will eventually make anyone want to scream and pull out their hair.

I apologise for my crudeness and self impatience with this person, and I realise what I have written here is not the nicest of things. I know B is a nice person, and he has always been pleasant to me, and is incredibly caring, however, after 4 months of getting to know him I can officially say, that I think I have the right to RAGE about him at least once.