Nerd is a term often bearing a derogatory connotation or stereotype, that refers to a person who passionately pursues intellectual activities or esoteric knowledge rather than engaging in more social activities, such as organized sports. Therefore, a nerd is often excluded from physical activity and considered a loner by peers.
Actually, I almost forgot that I had taken the exam. I am not a certified CISSP yet: it requires four years of experience in the related field in next five years. (or three in four years) Anyway, it is quite a pleasant start in new year.