On a dive in Lake Lanier near Atlanta, GA, I came across a sealed ziplock bag with something white and heavy. After the dive, back on shore, I opened the bag and found a pair of men's underwear wrapped in a rock. That was grotesque enough but then my imagination took over and seriously grossed me out. Whatever the story of the underwear was, it had to be so distrubing that someone was compelled to weight them down, sealed them in plastic and throw them off a bridge into the deepest, darkest part of the lake. I couldn't wash my hands enough.
Some have said that the really gross part of the story was just diving in Lake Lanier.