I know kung-fu

When I first came across this picture the first thing I did was laugh. But then I looked more closely and wondered 'What is this guy really thinking. '

Did his family really get killed by Ninjas? Does he really need Kung-fu lessons? Is he joking, like I first thought? Did he even write this sign or did someone just place it in his hands and take the picture? Is he plastered? So many possibilities...what do you think?

I personally think this guy has a great sense of humor and I'd give him some $ for Kung-fu lessons if I saw him on the sidewalk. hehe