A build up of filth in the river

As I walked along the river the other week, something under the water caught my eye. It lay in about six inches of water and had been partly obscured by weed. As I clambered into the current for a closer inspection it became obvious that this was man-made, and was in fact an empty DVD box. On the cover naked women writhed around on top of other naked women. Yep, I found myself holding "two hours of hardcore lesbian action...".

This is my first year in the club. I hear that at the start of each season some enthusiastic members don their waders and clear any filth that has built up over the winter. I think they must have missed some...