You can get a blackhead anywhere on your skin, A black head is just dirt blocking a skin pore and it can cause a slight infection.
Just like bwtsrl said, it is possible to get pimples, black heads, white heads, etc. Anywhere on the body.
IRS probably just the root of another hair because I thought it was a black head and I was like Weird dd! And I tried to pop it and then I looked and there was a hair where that "blackhead" was.
Only if you are black. Oh yeah, and male.