I, too, wasn't a tantruming kid. I was generally quiet and obedient. But I remember losing my poop at least three times before the age of 13. After 13 I was miserable and moody but still not prone to tantrums.
1) I was about 8 or so and playing (and losing) at Parcheesi with my Mom, who could have cared less about winning. I finally flung the pieces off the board and accused her (at the top of my lungs) of cheating. She quietly told me she didn't think she was going to play with me again (she did). I retired to my boudoir for a dramatic, throw-myself-on-the-bed cry.
2) We were at either Burdines or Maas Bros. shopping for school clothes when I was 10. My mom's MO was to get the most bang for the buck and this meant that I was always picked on for my (or more accurately - my mom's) sartorial choices. $35-$50 for jeans (Jordache and Sergio Valente - Sasson being an acceptable substitute) in 1983 was beyond my mom's comprehension. My mom was so stunned by the full-on, crying, screaming, in-public meltdown (I was a really quiet, biddable kid) that she wordlessly bought me a $35 pair of black, stretch Sergio Valentes that paired quite well with the fluorescent tops I managed to wheedle out of her while still sniffling.
Not one of my finer moments.
When I actually managed to calm down later, I apologized but asked my mom if she had a budget and could we just buy what I actually wanted with that budget even if it was a smaller pile of clothes. Because I wouldn't wear the stuff she wanted to buy me anyway.