Right this is what happened.
I was just sat on the Loo and I needed to get a new Loo roll out of the packet. I saw a little leaflet in the packet, when I looked it was a leaflet saying "
Win your christmas shopping with shades ASDA". All you have to do is fill in the form with name and address along with Til receipt for proof of purchase"...........................
Then it says in the small print NO PURCHASE NECESSARY............
Duh?? what 
