Our kids have breakdowns frequently. I wouldn't say tantrums, but definitely "I am not enjoying myself and you won't either then" 'tudes!!!!
My DD6 had one MAJOR tantrum about a year ago. It was my mom, me, DD6 and DN1. WELL, DD thought that the cart stroller at Kohls should be hers and I refused to push a double stroller around the store when she is WAY too big to us one.
She screamed and cried and hit and punched and kicked and even tried to tip the stroller over. I tried to remain calm and continue shopping but it was just to much. The whole tantrum was probably about 15 minutes long, but it felt like hours to me. Needless to say, we finally left and sat in the car while my mom finished her shopping.
She has never done this again since and had never done it before that day. Still don't know why even, but what I CAN tell you is: On that day I knew why some species eat their young!!!!!!!!