See that big red sign on the left just in front of the passenger? It says “吐痰请往外吐，提高个人素质。” or, “Raise your level of personal manners — Spit out the window.” Awesome. If everyone did this, our buses would be so much cleaner!
h/t to @微博搞笑排行榜.
Bored? Read more funny stuff here.