This Maybe A Stupid Question.

[Orangez.]

This maybe a stupid question but... when do you grow hair under your armpits? LMFAOOO.

[-:Undertaker:-]

Can range from 11 - 17, depends if your fast or slow. I started getting some a few months ago and I was 14 at the time :)

Different parts develop faster than others, for example someone may get hair on their chest before their arms.

[mangle]

When you start puberty....

[Mario]

if you concentrate really hard, hairs will grow under your arms.
nah, view the wikipedia article here (http://en.wikipedia.org/wiki/Underarm_hair) for more info.

[Markness.]

Hair under your arms is a pain in the bum :@
Don't use roll on deodorant when they show up :P