no seriously, you ever try the self checkout at the metro superstore? a bunch of morons there who think they're "hip" by trying out this "new fangled" technology when they don't know a scanner from a hole in the ground.
this one lady i was waiting after probably took like 15 minutes to figure out the freaking thing, and after she was finally done she had the nerve to steal a HANDFUL of bags. seriously, what are you doing to do with all those bags?