Big Dick Lens
A Big Dick Lens (BDL) is any camera lens bought primarily by men in mid life crisis for the sake of male enhancement. A BDL is exorbitantly expensive, providing it's owner with a feeling of smug superiority. Examples include the Leica Noctilux-M 50mm f/0.95 ASPH., which retails for almost $12,000. Nobody needs a BDL for any useful purpose, it's purely for show.
Guy: I need a Big Dick Lens for my Leica M10
Other Guy: Get a Noctilux, that BDL will give you a monster cock!
Other Guy: Get a Noctilux, that BDL will give you a monster cock!