Me (at the checkout counter):  This is great!  I need these rubber o-rings and I see they’re marked as 50% off!

Checkout Girl:  Yeah

Me:  I figured I’d buy two if they’re on sale.  I mean, what the heck right?

Checkout Girl:  Makes sense.

(She rings it up…the display shows $21,400,000.00)

Checkout Girl:  Umm…

Me:  Uh, this credit card isn’t going to work.  Pretty sure I don’t have a 21 million-dollar credit limit.