Fill the bottom 1/4 of a tall glass with the raspberries, banana, and blueberries. Take a wooden spoon and crush the fruit until only small chunks remain (large chunks will be difficult to suck up through a straw!).

Fill the remainder of the glass with ice. Now pour enough gin to fill 3/4 of the glass. Finish the recipe by topping off the remainder with tonic water, and give it a quick stir.

Be creative with your fruit choices! Just be sure that they are soft or ripe enough to 'mush.'