I have the habit of not picking a stuff which is on the first row, but dig inside and pick the one in the 2nd row or 3rd or bottom one. My boy knows this well From choosing a shampoo to choosing newspaper. Whatever that is put in rows or stack up.
The first time I realize that my mum does the same thing like me (or rather, I follow her) is on last week. We went to a book store and she was picking a tabloid that she always buys. Instead of taking the one on the first row, she pick the second one under it.
I was surprised, like seeing myself doing it. I smile and told her I did that too. I asked her why, she said the first one sure being touched by so many ppl, better pick the second one or third or forth.
I do the same thing with the same reason too. Now I know where did I pick that habit from. I saw, I do.