Three guys were taking needles,

Three guys were taking needles, two Americans and an [ethnic] 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 [ethnic]
guy.

The [ethnic] guy takes the drug without cleaning the needle.

The two Americans yell at the [ethnic] guy, telling him he can get aids
from using a dirty needle.

The [ethnic] guy says “No I can’t. I’m wearing a condom”