I get so offended over guys who act like dicks when their friends are around

Am I the only one? I've never met a guy that wasn't like this. Are guys like this all the time when we aren't around?

My husband stays home with me pretty much all the time even though I encourage him to go do things. So I haven't had many opportunities to see him with other people. Today his work buddy (I've never met this guy before) came over to help bring in some furniture I bought today and hubs was loud and obnoxious and was calling his ex wife a bitch (I'm not a fan of women being called derogatory names like that) and just wasn't acting like he normally does. He's usually a fairly quiet, laid back kind of guy.

Is it weird that I get EXTREMELY offended by this kind of thing? He went to go take his friend home and I would seriously be ok with not seeing him the rest of the night, I'm so mad. I've always been like this, I hate how guys act with their guy friends. He doesn't know I'm mad and I haven't decided if I will tell him I am or not. My blood is boiling though so I just feel like things are going to explode when he gets back, no matter how hard i try to hide my anger. Grr