Coworkers dropped a 18"x 20ft pipe next to me and had let it crash to the ground. I got ULTRA mad, and then they got mad at me being mad, and started spewing out racial slurs.
Though they apologized days later, relations haven't been the same since.
Once upon a time, my family left me at home while they went for chinese food because I was being bad, so I got mad, and I cut the roots off my mom's favorite plant, so it died slowly and she thought it was her fault.
One time I got hungry and wanted a piece of cake so I went into the room where the cake was, but it was dark. So I turned the lights on, but as I brought my hands down I accidently knocked over/broke a wine glass. I was mad.