Cry Baby is a brand of extra sour bubble gum manufactured by Tootsie Roll Industries, Inc.
Their claim to fame is their incredibly sour coating, which disappears shortly after the gum is chewed. The name comes from the fact that the gum is so intensely sour that it is not uncommon for one's eyes to water upon first tasting it.

They come in the following fruit flavors:

• Lemon
  Lemon
  The lemon is both a small evergreen tree native to Asia, and the tree's ellipsoidal yellow fruit. The fruit is used for culinary and non-culinary purposes throughout the world – primarily for its juice, though the pulp and rind are also used, mainly in cooking and baking...
  
  
• Cherry
  Cherry
  The cherry is the fruit of many plants of the genus Prunus, and is a fleshy stone fruit. The cherry fruits of commerce are usually obtained from a limited number of species, including especially cultivars of the wild cherry, Prunus avium....
  
  
• Apple
• Berry
  Blueberry
  Blueberries are flowering plants of the genus Vaccinium with dark-blue berries and are perennial...
  
  
• Orange
  Orange (fruit)
  An orange—specifically, the sweet orange—is the citrus Citrus × sinensis and its fruit. It is the most commonly grown tree fruit in the world....
  
  
• Watermelon
  Watermelon
  Watermelon is a vine-like flowering plant originally from southern Africa. Its fruit, which is also called watermelon, is a special kind referred to by botanists as a pepo, a berry which has a thick rind and fleshy center...