When a new school year begins, and the older students decide to point the Freshmen (Grade 9's) out.
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 11 :Hey Man, check out that grade 9. He is annoying, why don't you go Niner him for me, please?
Grade 12: Sure, just let me grab a marker and some tape and start Ninering.