Annoyance of the day

-When you go out to a place that has stuff behind a counter....let's say ice cream or maybe chocolates, it IS NOT necessary to touch the glass in order for the person behind the counter to know what you want.
-For serious, so many people come into work and like put their hands all over the glass and it drives me crazy. It's not just kids either, its adults too....which annoys me even more.
People should like have to wear mittens everywhere they go or learn not to touch everything.