My favorite curse word is "dumb ass" and/or the variation, "jack ass".
Jeff K. over at Boiled Dinner borrowed on the topic of first memory, which brought to mind my inagural use of salty language. I was walking home from school (we did that in those days...alone, unaccompanied and sometimes for blocks and blocks) when I came across a boy who asked me my name. "Jodie", I said. Obviously a huge fan of TV's "A Family Affair", he replied, "Jodie??!! That's a boys name!!". At which point I called him a prick (a fun sounding term I'd heard my two older brothers throw around) and went on my merry way, ever so proud I'd stood up for myself and put little-boy-Mr.-French in his place. So proud, in fact, I happily told my Mom the story in detail as soon as I got home. I don’t recall if I had to bite on a piece of Dial soap or get a sprinkle of black pepper on my tongue, but Mom was not amused.
Let 'em flow.