1 (12 fluid ounce) can frozen limeade concentrate
1 cup cherry-flavored rum (such as Bacardi Torched Cherry®)
5 (12 fluid ounce) cans or bottles beer (such as Budweiser®), or more if needed
Fill a large pitcher a quarter-full of ice. Add limeade and rum; stir with a spoon to combine. Pour in enough beer to fill the pitcher. Mix to combine.