I don't believe that's childish at all, but then I have taken up the hobby of saboutaging scum merchandise ever since I read about it on here a couple of years ago.
Whenever i'm out, I have to turn any scum cards, magazines, calendars, bags etc upside down and back to front so that you can't see the badge. Either that or hide it behind something else. I see it as a personal fight to stop the spread of this terrible rag disease.
As I live near Sheffield you may have noticed some of my work in Meadowhall shopping center.
I would estimate that i've hidden at least 1000 items of rag filth since I began and I urge you all to join in - it brings a lot of satisfaction.