I'm 21 years old and last year i noticed a small hair growing from inside my penis hole. i thought it was just a hair that may have somehow worked its way inside but i pulled on it and it was definately attached. i plucked it. about 6 months later i noticed it again, so i plucked it agian. 6 months later, (today) i noticed it a thrid time and plucked it angain. each time the hair was wbout 1cm in length. i dont think its anything to worry about but i really wanna know why there was a hair growing inside my penis.