Paloma
juice of 1 grapefruit & 2 oranges combined
ice
salt
1-3 oz tequila (depending on how strong you want it)
bottle of squirt
Fill cup with ice and a pinch of salt. Fill cup a little less than half way with the grapefruit/orange juice. Add Tequila then mix while topping the cup the rest of the way with squirt to it foams up a little.