In ways, by chasing them around school and drawing dicks on their faces.
NOTE:Only Grade 12's can achieve this prank; younger grades should ask the Grade 12's.
Originating in Toronto,Ontario.
Grade 12: Sure, just let me grab a marker and some tape and start Ninering.
Those guilty of Ninering are often fans of historically successful franchises and cannot deal with losing in a secure and gracious manner, leading to petty gloating.