'Vulgar' in the Bible

When David went home to pronounce a blessing on his own house, Michal, Saul's daughter, came out to meet him. She said, "How the king of Israel has distinguished himself this day! He has exposed himself today before his servants' slave girls the way a vulgar fool might do!"

Neither should there be vulgar speech, foolish talk, or coarse jesting -- all of which are out of character -- but rather thanksgiving.