I recently spotted the above sticker on the roof of a Muni Train.
Yes, it accomplishes its goal of providing a safety warning to passengers so that they will not get hurt in the automatic doors.
However, I think it would be much funnier printed on the back of a Hooters waitress' t-shirt; or just on a t-shirt in general.
Who knows...this may be coming to the Just Jon Junk store 2011.
The Song Of The Day - Grab A Hold by Cyndi Lauper