You know, maybe if more people had the guts to turn to the jerk behind them who is motherfucking up a motherfucking storm on his cellphone and say, "hey, I've got kids here, tone it down" this would be less of a problem. I don't care if people swear, go nuts, but when you are in a public place with kids and families around use your head and keep it pg. When I'm sitting at a Starbucks with my wife I don't need to hear you and your bro talk about that "c*nt" who didn't suck your, I'm sure, giant penis last night bro.*
For the record, I know it's easy to say people should tell them to shut up and harder to actually do it, it goes against our societal instincts so I don't look down on anyone who feels uncomfortable doing it. I generally avoid the confrontation unless there are kids around, but when I have kids? I got no problem asking people to tone it down.
*True story from this weekend. Thanks for sharing with the whole coffee shop bro. Also: nice crocs. Maybe she saw those and thought better of having any sort of sexual contact with you.