Three guys were taking needles, two Americans and an
African guy.
The first American takes the drug and hands the needle to
the second
American who cleans the needle, takes the drug and hands
it to the African
guy.
The African guy takes the drug without cleaning the
needle.
The two Americans yell at the African guy, telling him he
can get aids
from using a dirty needle.
The African guy says "No I can't. I'm wearing a condom"