10 extremely creative advertisements on buses
At least they have the space to be creative. Those are the best 10 I could find.

File I will write too:/var/www/funny-city.com/public_html/cache/search/toch-on-bus
One day, at a bus stop there was a girl who was wearing a skintight miniskirt.
One day a hippie gets a ride on a public bus and sees a hot young nun. He sits down next to her and promptly asks if she would like to have sex, to which she immediately says no and walks off the bus.