Definitions by AlwaysAPotterhead

OMR 

Commonly used by Potterheads when surprised or taken aback. Means Oh MyRowling (Rowling being J.K. Rowling, the woman who wrote the Harry Potter series.)

*At the Harry Potter premier*

Person 1: OMR! It's Jo Rowling!
Person 2: *faints*

OMR by AlwaysAPotterhead February 26, 2012