On your left you may see another known example of parallel zebra lines. As hard as it may be to imagine, both vertical sticks you see are perfectly straight, and mutually parallel. The strange background pattern is the guilty one for making them look they are leaning. Another interesting example can be seen below. Can you believe that all these snake-sampled lines are perfectly straight and parallel? No? Well, I’m just messing with you this time :) Had to test how strong my influence rally is. Enjoy your stay, and keep your fingers crossed for me passing the exam on Friday.