Some guys were throwing a bachelor party for their buddy at a steakhouse in Charleston, South Carolina over the weekend, when one of them happened to see BILL MURRAY eating in another part of the restaurant.


The guys tried to send drinks to Bill, but he declined them.  Then one of them went and asked if he'd come say a few words to the groom-to-be, and he said no.  But two minutes later Bill walked into the party and started giving out advice.


First he said, quote, "You know how funerals are not for the dead, they're for the living?  Bachelor parties are not for the groom, they're for the uncommitted."


Then he told them how to figure out if you're with the right person, quote, "Take that person and travel around the world.  Buy a plane ticket for the two of you to travel all around the world, and go to places that are hard to go to and hard to get out of.


"And if when you come back to JFK, when you land in JFK, and you're still in love with that person, get married at the airport." 


(Here's video, which ends with Bill prompting the rest of the guys to help him lift the groom into the air.  WARNING!!!  The video does include some profanity.)