So since we all have different opinons on "how dirty is your bag"... I was wondering what do you think is the dirtiest thing?

Someone in the other thread mentioned "money", and I second that.
My dad mentioned to me before that shopping cart handles are really dirty..

I remember when I was doing a swab test in hs, I swabbed a couple of items... and the one that had the most germs on it (that i tested) was the "sick" stamp thing in the office (where people stamp an absent note saying they were sick.