Kid after eating a ton of microwavable egg rolls. A couple of times when I had dengue in Brazil. And once when my sister and brother in-law made an apple pie with apples that fell into the dirty trash can and then they undercooked the pie. They didn't mention that the apples had fallen in the trash until after I ate it. Other than those instances I can't remember ever throwing up. Oh, there was 1 other time where I swallowed a lego gun and my grandma gave me ipecac syrup to have me barf it up. Boy did that work! Yikes.