Jonathan Winston of Bikescape sends us this fury-inducing image he caught while wandering the catacombs of the Macworld Expo. It's a "baseball cap mounted iPhone with a handy plastic magnifying strip. Just right for watching youtube while walking down Market Street!

Save for the bald, in good conscience we cannot promote the sporting of baseball caps. And we can just imagine the streets of San Francisco turning into a blood bath if iPhone users started slowing down instead of pulling over to watch "Turkey Lurkey Time" for the eighty-fourth time. (Because we all now know to pull over to the right-hand side of the sidewalk to text or watch clips, right? Well, now you do.)

Any other shots of interesting products over at Moscone? Send them our way. SFist was there earlier today, but unkempt children attending the Expo frightened us away. Little rat bastards.