Blind Swipe

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.