Get a glass. Fill it with crushed ice. Pour about an inch worth of vodka in, then about a quarter inch of lemon juice. Fill the remainder of the glass with tonic water. Repeat about 7-8 times over the course of a couple of hours.
As a bonus, Beverly Hills Cop: Axel F is on Netflix. Great movie. Kind of reminds me of Lethal Weapon back in the day, but still a seriously great and funny movie. Well worth a watch. Judge Reinhold is seriously underrated.