Drop a few cucumber slices in the bottom of a cocktail shaker and muddle. If you don't have a muddler a wooden spoon works just as well. (I mean, where would I possibly fit even one more kitchen gadget?! My drawers runneth over.)
Add vodka and fill shaker with ice. Shake it like a polaroid picture. Strain into a tall glass filled with ice.
Top glass off with ginger ale.
Garnish with cucumber slices.