If someone calls trying to sell you something you don't want...just start talking gibberish, like so....
"Gills, dog carp!? Orange scoop froggies, ffffffllllllounder! FFFFFllllounder, Fffffllllounder!!!! Marshmallow! Carrot? Orangutan?--"
Click!
What are your methods of getting rid of these types of unwanted callers?