Tribe check

A form of tribalism. This occurs when an individual questions what tribe you belong to, as a way of determining your compatibility with their tribe. If the tribes aren't compatible, both parties may be subject to awkwardness, unease, and even confrontation.

*watching football with coworkers*
Douchey coworker: "so, new guy, what's your team?"
New guy: "...don't really appreciate you tribe checking me in front of everyone like that dude"