I was 100% left handed until third grade. In third grade I drew a teacher that, uh, well I'll just put a picture of her up so you can see what I'm talking about.
I wasn't allowed to do anything left handed. Being left handed was a sin! Maybe that is what started my lifetime habit of being sneaky.
I'd have to sit on the same side of the table as the teacher when we went to eat lunch in the cafeteria. If she saw me with a fork in my left hand all hell broke loose. You'd think I'd shot Santa Clause!
Since then I do some things right handed and some left handed - but I ALWAYS eat right handed.