Top Definition
Verb- Act of showing support for the Seattle Seahawks by proudly sporting jersey's and other gear, and by displaying #12th man flags. 12ing should be done as often as possible if not all the time. If you see a fellow 12th man or woman 12ing, yell "SEA-HAWWWWKS!!!!" to show your pride. Post pictures of yourself 12ing whenever you can! GO HAWKS!
The frenzied fans of the Seahawks brought their 12th Man flag on vacation and posted a picture of themselves "12ing in Vegas" online

The Hawks fans were 12ing so hard at the game, the Whiners tries to impose noise control rules.
#12-ing #12ing #12th man #12th woman #12 ing
by Beastmode Allie January 13, 2014
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