Lilk, what makes you think their faces are straight?
PDog, do you thing they also might be concetrating on "Don't look to the side, don't look back?"
A few years ago in Tourmolinos, Dys was at a beach=side hotel where there were lots of middle-aged people sunning--all nude. A stunningly beautiful Scandinavian-looking girl walked into the middle of the crowd and took about half an hour taking off her clothes. Naurally, the men were smiling, the women were snarling.