are you my nan?

Originating from the term oh my nan. "Are you my nan?" is a phrase that can be used instead of what are you doing? or what. Commonly used in South Australia and New South Wales.

Teacher: You are a terrible student and are going to be expelled.
Student: Are you my nan?!

You Nan

An insult given to an irritating or selfish person. Commonly used by Secondary school idiots.

"Stop hogging the fucking food Emma! You nan"