I walked up and quietly told them "those girls, including my daughter, are all under 18 and if you walk down there, you will have a problem." I then walked back to my table with my wife and daughter.
them: "We can do what they want and you can't stop us bada**."
Me: "well, if you get up and walk out that door, all four of us will find out if I am a bada** or not. But I can promise you it won't be the first time I've had my a** beat but one of you are gonna feel it in the morning."
They went back and forth, the owner came over and apologized.
When I got up to leave one muttered "see you bada**" under his breath when I was a few table past them.
I walked over and told all three I would be outside the door waiting for them to come out. They didn't so I walked back in and yelled for everyone to hear. "I knew you 3 pu***** wouldn't come out." started laughing and walked out.