SweeTarts (or "ghetto Skittles") are not sweet, and they are most certainly not tarts. They are, however, the closest thing to edible Tums. SweeTarts come in five flavors: sour, bitter, chalky, dry, and unpleasant. Exposure to any one of these flavors is believed to cause irreparable damage to the esophagus. Even touching one of them makes your fingers burn a little.