Unknown Language

Evening, /lang/. I know you probably get this a lot being the board dedicated to it and all but, I cannot figure out what this language is and/or what the sentence (in picture link) means.

Could someone help?

Thanks for your time.

http://img21.imageshack.us/img21/3582/1242278303161.jpg

http://en.wikipedia.org/wiki/The_Treachery_of_Images

"This is not a bike."