My husband and daughter started calling me Yosemite Sam one say when I was giving a 24 year old proper heck for calling our then 14 year old daughter. My hubby came upstairs just as I was hanging up the phone and when I told him what I had just done, he said, "Yes, I heard you doing your Yosemite Sam act. BACK OFF, Varmit". The name has stuck since then as I do have a tendency to get rather fierce with I'm annoyed.