Got them when I was very young. Not many, 'cause I was good kid, but they were my parents' main form of discipline, and so I was constantly under the threat of a spanking if I did anything wrong. My parents didn't believe in counting to three. If I did something wrong, I got spanked. I think that the fear was much worse than the actual spankings, however.
I did get spanked for not sitting still at the meetings (when I was only eighteen months old, I should add). My mom tells a story about when I was two years old. (This is her account of it. I don't remember anything from before I was 4.) Apparently I was throwing food around at the table, so my mom took me into another room and gave me a spanking. (I dunno how many spanks, but definitely more than one.) Then she asked me if I was going to apologize. I said no, and she spanked me again, and said she was going to keep spanking me until I apologized. I eventually gave in, of course.
What's sick is that she tells that story with pride. She also claims that when she brought me back to the table, I was smiling. Stockholm syndrome maybe? That's the only explanation I can think of.
My brother and I were both well-behaved little dubbie boys, and my parents would get complimented on our behavior all the time. And of course, I always had to listen to them explain that the reason we were such good boys was because we had gotten spanked when we were babies and toddlers.