Why is Everyone So Damn Pissed Off

So why is it that everyone is in a bad mood on the same day. I feel like they all are out to get pissed off at everything and everyone. Or maybe it just runs in my husbands family. See I work for his parents and his dad was pissy this morning and then my husband seemed pissy this morning. It's like nothing you say is right and they will get pissed at anything, even when you are being nice or trying to help. Not only that my husband is one of those people that will yack and argue over nothing for hours. And he keeps repeating himself like I didnt hear him the first time. Well after I have heard the same thing 4 times I am pretty sure I get pissed off that I am wasting my time and talking about the same thing that was finished a long time ago. It drives me crazy and all I want to do is yell and scream and I cant because that would only drag the conversation on even further. What am I supposed to do....I can only be patient for so long....and not only that as the conversation goes on it always becomes my fault no matter where it began. I am so fucking tired of taking the blame for everything when I know and I am sure he knows that it wasnt me to begin with. AHHAAAAAAAAAAAAAAAAAA!!!!!!!!!!! Shoot me! Is it just me or is this a bit crazy!>??! I love him to death but geez stop already!