ɟdoʞ ɯǝp ɟnɐ sǝllɐ

ʇɥǝɹpɹǝʌ lɐʇoʇ ǝpɐɹǝƃ ǝʞuǝp ɥɔı

Flip [via](http://instant-
thinking.de/2008/04/09/do-p-n-sll/)

{% include JB/setup %}