Groupon (Washington, D.C.). For $15 you'll get $30 to spend at On The Border. Go HERE to purchase your voucher.
The Fine Print
Expires Jul 25, 2012
Limit 1 per person, may buy 1 additional as a gift.
Limit 1 per table.
Not valid for the purchase of alcohol.
Valid only at Tyson's Corner and Bowie locations.