A term used for when a person of any certain ethnicity does something that is stereotypical or representative of their culture. Points to arm derives from the actual pointing of one's arm to identify skin color relating to the stereotype and specified action.
1) Boy, Jamal is an amazing dancer, how points to arm of him.
2) Mike: Enrico, you ordered the Enchilada?
Enrico: Of course! ::pointing to his arm::