Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      large         or two small cucumbers
                        sliced thin
   1      small         or 1/2 large red onion
                        red wine vinegar -- (enough to
                        thoroughly soak the above -
                        i use enough to
                        *cover* -- but then i really
                        like red wine vinegar -- ) )
                        black pepper -- (ground) to
                        taste
                        (optional - diced
                        pepperoncini -- a handful or
                        so)

Preparation:

Combine everything and chill for at least an hour before serving. Keeps a while too, with all that vinegar.