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1.
When One, often a prep student, wears TWO popped collars simultaniously, one on top of the other, thereby signifying that he or she is better than the simple single popped collar wearers.

By wearing two popped collars, it is also implyed that the wearer likes it in the butt.
Prep Girl: My dual collars, are awsome...tot obvi holler
by BOWski May 16, 2005