This guy seems to be having a pretty bad day - just look at his sad, long face. What's even worse is that he probably has no idea of how some creative ad company is using him to make a funny bus advertisement. It's probably better that he doesn't know. The ad in question appears to be about some type of women's body milk - a product you can be sure this guy doesn't want to touch with a ten-foot pole.
Ads like this first appeared over 10 years ago, but they are not as common as they used to be - at least not in developed nations. There are some places in Asia and Eastern Europe that have only recently attempted to do ads like this, so there is some probability that this guy was photographed in one of those places.