When your SO cusses out??

Hey guys, I just want to know, how do you respond, if, or when, your significant other cuses you out? Is it something you just overlook? Is it something that goes along with fights if you have any? Or is it something that's a deal breaker? I've had a past with verbal abuse, so I'm a little more sensitive to it than most, but I want to know what is acceptable to the majority of the ladies out there