Part of Sony's PSP promotional campaign in the UK involved plain white posters with the red text 'take a running jump here"?. After subway and train workers expressed concern about having such posters at train stations (and close to the tracks), Sony decided to remove the posters from those locations.
We hope that no posters were put up on piers or bridges.
The moral of the story? You should certainly try to have catchy and edgy advertising to promote your games and products, but always give some thought to what effect those ads might have on the intended audience, and what legal liabilities might be involved.