problems w husbands friends

so my husband told me that all his friends ever talk about are women and sex. theyre all over 30yrs old and have wife/kids already, but theyre still talking like middle schoolers. i said if he doesnt want to he a part of it then stop hanging out w them. cause theyre disrespectful to their wives and women in general. he gets all mad that hes stuck w them and he doesnt want to do that because he doesnt want them to think wrong of him, cause theyre not understanding. well, seems to me he actually likes it, and i bet hes talking about other women w them too. i have guy friends too, and they certainly dont talk about other women. what would you do if your man has friends like this?