French or maths, purely because I hated my teachers for both. I'm looking at picking French up again now, 14 years later. If I'd got on with the teacher I reckon I'd have stuck at it from the off.
French, I needed a tutor and I was still at it. I failed every speaking and writing examination first time and got B's on each retake only because I poured loads of time into making it better. In secondary school I didn't put much effort into revision but me any foreign language subject is just bad if you don't keep practicing it.
P.E. They only played football and occasionally cricket I'm coordinated and as my strict guardian didn't allow me to play with the kids after school I found that most improves in leaps and bounds beyond me. I grew to hate the sport and ended up giving my kit to any poor kit who'd forget theirs.