One time when I was probably 7 or 8, we were at my ESTJ grandmother's house, and she brought me a bowl of ice cream after my meal. I didn't immediately say "thank you" so she took the bowl away. I said "No! Bring it back!" She did and set it down again and waited for a second. I still didn't say "thank you" so she took it away again.
I knew what she wanted me to say, and that's precisely why I couldn't do it. It was more important for me to maintain my own personal freedom by fighting her on that than it was to get the yummy tasty ice cream that awaited me if I only said two measly words.
I never had any explanation for that confrontation before I started reading the personality type stuff. Now I see it as a pretty classic SJ authority vs. SP child battle. Neither of us were gonna give an inch because we both thought our way was best. I regretted not having the ice cream, but I still wouldn't admit defeat, because she didn't get me to bow to her rules. When I tell people of other temperaments that story, they don't understand why I would deny my own pleasure just to resist being directed. It doesn't make any sense to them, but my fellow SPs know exactly what I'm talking about.