I'm slightly competitive. Just a little. Growing up I was never good at sports. Even grown up, now, I'm not good at physical activity. Even walking at a slow pace on a flat surface requires the kind of visual-spacial-hand-foot-eye coordination I barely possess. This made it a little difficult to find a good, un-awkward outlet for my competitive streak. "I read more books than you! I finished my homework first! I can name the entire prime time line up of Nick at Nite in 0.43 seconds!" These things do not make you cool.
I'm older and wiser now. Still not much cooler.