A man walks into a bar...

...and walks up to the bartender.

"Point out the toughest assholes in the place. I'm going to kick their asses."

The bartender looks around and notices a table in the back with four military guys sitting around it. A Marine, an Army soldier, an Air Force soldier, and a Navy sailor. The man walks back to the table and says to them, "Who's the toughest one here? We're going to go out back and I'm going to kick your ass."

The Marine jumped up and went out back with the challenger and promptly got his ass kicked. The challenger walked back in and told the others, "That's Muy Thai from Thailand. That's how I fucked him up."

The next night, the man returns and the Army soldier jumps up and goes out back where he also gets his ass kicked. The challenger walks back in and says, "That's Shotokan from Okinawa. That's how I fucked him up."

The next night, the Air Force soldier is next. He gets up and goes out back and gets his ass kicked. The challenger walks back in and says, "That's Chinese Boxing from Beijing. That's how I fucked him up."

The fourth night, the Navy sailor, naturally drunk already, stands up and stumbles out back with the challenger. The sound of fighting was heard and then all was quiet. The sailor stumbled back into the bar a few minutes later and said, "That's a crowbar from Sears. That's how I fucked him up."