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When you have no idea how much money is left in your bank account, but you go ahead and use it anyway. The Blind Swipe is always accompanied by a sense of terror until you see the word "Approved".
Female Roommate: We REALLY need toilet paper, and you said you would buy it this time!

Male Roommate: I've just been shitting at work.

Female Roommate: Goddammit, I have no idea how much money I have, I'm gonna have to Blind Swipe it. I hate you.
by acrobatcat April 25, 2012
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