Fill the martini glass with ice then fill with water; set aside.
Add blueberries to the bottom of a shaker to muddle or crush.
Muddle or crush blueberries.
Add ice to the shaker.
Add vodka to the shaker.
Add juice of your choice to the shaker.
Add a splash of sprite, if you want to take the kick off a little bit.
Stir, don't shake, the shaker to combine liquids.
Dump the water and ice from the glass...that won't get you buzzed!
Your glass should have a frosted look to it.
Pour that sweet nectar you just made into the martini glass.
Enjoy with a splash of grenadine if serving to a dame or keep it as is if that's how you like it. Ignore nuisances and have many of these. Prepare some apologies in advance. Remember not to ride the dog like a horse, but understand climbing mountains, aka stairs (when drunk), the dog does demonstrate the best method to negotiate said obstacle.