#1 Shawn Michaels
Shawn Michaels was known for having a big mouth and that has come from many sources within the business. As we all know, when wrestlers go to public places they almost always get recognized by people.
Shawn was the Intercontinental Champion around 1995-96 and was on his way to becoming the WWE Champion. One night as the story goes, he went to a bar with the British Bulldog and the 1-2-3 Kid.
While at the bar, apparently Shawn was running his mouth at a bunch of marines. It's not known exactly what was said, but apparently Shawn was hitting on a girl that was with one of the guys. There are so many versions of the story so it's hard to know what one is true.
Shawn ended up getting beat up by the marines and couldn't do anything about it. It's definitely true that Michaels got his butt kicked to some degree.