A Denim Dan, a pedophile. Someone who is sexually attracted to small children.
I went to the park last weekend, I had to leave with my children as we suspected a man of being a Denim Dan.
My next door neighbour was arrested at the weekend for being a Denim Dan. The police found numerous images of underage girls on his computer.
To be a Denim Dan, is the same as being a Pedophile