My brother is what you could refer to as a know it all. He is terribly annoying, plus to me, he regularly has been that way. He seems to believe that he’s an expert on everything. This past year, over the holidays, I was pretty much ready to smack him because he wouldn’t stop speaking about HVAC machines plus all of the things that he actually knows about it. The thing is, he doesn’t know much about gas furnaces or air conditioner machines! I’m actually the person who is a certified HVAC machine worker. My brother basically wants almost everyone in our family to guess that he knows what he’s talking about… I’m sure you’ve met someone who acts similar to this before, or you might even have someone like that in your own family. They are terribly annoying. I honestly know for a fact that the only thing my brother knows about heating plus cooling machines is how to adjust the temperature control device in his own residence. He absolutely acts like he knows it all pretty much all the time. I personally guess that this is the honest reason that he can’t get a girlfriend to stay with him for especially long. He’s just irritating to be around. This whole thing with him acting like he knows everything about HVAC machines is the worst. I guess it’s genuinely just because I absolutely do know just about everything when it comes to heating, air conditioning, plus ventilation. I mean, of course, I can stand to learn more! But when it comes right down to it, I’m the professional, not him. When he acts like he knows what he’s actually talking about plus it’s so clear to me that he doesn’t, it makes me annoyed and I don’t want to be around him.