That is why those special snowflakes should be walking! Any child old enough to be doing that on purpose is old enough to be walking. To bad you didn't have a drink in your hand that the snowflake could have been wearing, you know from the "surprise" of getting soap in your eyes-except it would have been well aimed
I have only seen them in line a couple of times thank goodness. I would say something if the child was blowing them on me. (if they are screaming you should do the courteous thing and leave the line)