7/11 brown or 9/11 brown

7/11 brown or 9/11 brown refers to a racially-precarious joke about brown-skinned people. The phrase is usually asked to a brown person like this "Are you 7/11 brown, or 9/11 brown?" Essentially, this question is a funny and racially insensitive way of asking if somebody is South Asian lineage (7/11 brown) or Middle Eastern lineage (9/11 brown). This means that if your parents are from Iran or west of Iran, you are Middle Eastern lineage. If your parents are from Afghanistan/Pakistan, or east of Afghanistan/Pakistan, then you are South Asian lineage. So basically, Iran's Eastern Border is the division between the two regions.

This joke is because many 7/11 stores are worked by South Asian people, whereas 9/11 was done by Middle Eastern people.