Not My Fault

There was this little guy sitting in a bar, drinking, minding his own business when all of a sudden this great big dude comes in and --WHACK!!-- he knocks him off the bar stool and says, "That was a karate chop from Korea."
The little guy thinks "GEEZ" but he gets back up on the stool and starts drinking again when all of a sudden --WHACK-- the big dude knocks him down AGAIN and says, "That was a judo chop from Japan."
So the little guy has had enough of this so he leaves and is gone for an hour or so and when comes back --WHACK!!!"-- He knocks the big dude off his stool and out cold!!!
The little guy looks at the bartender and says, "When he comes to himself, tell him that was .......a crowbar from Walmart.