3 fluid ounces lemon-lime flavored soda
1 1/4 fluid ounces raspberry-flavored vodka (such as Smirnoff®)
1/4 fluid ounce triple sec
1 maraschino cherry
Fill a cocktail shaker with ice and pour in lemon-lime soda, vodka, and triple sec. Cover, shake, and strain cocktail into martini glass. Garnish with a cherry.