It's As Plain As The Tattoo On Your Head

Hmm. Here's a message to the ad agents at NZ Airline. If you tattoo a message on the bald heads of 50 people waiting in line about speedy check-in processes, and those bald heads aren't moving very fast, um, won't your plan backfire? And if the bald heads do move fast, who's going to have time to read their heads? So, isn't it doomed anyway?