The customer was being rude by holding up the line to flirt with a girl so the cashier purposely put the wrong credit card numbers in so the register would say his card declined and make him look bad infront of the girl.
But you're just holding it up even more, douche. Having a messed up credit card isn't even embarrassing, and the girl probably thought he was stupid already. Don't be a douche.
Your card being declined is a sign that you are maxed out on your limit, or it was flagged, neither of which are considered good things, especially when trying to impress someone. It means you either can't budget your finances, or you don't make enough money, both of which are highly valued traits people look for in a partner. Yes, it can be explained away, but that first impression always lingers. The girl's actions are never stated, so you have zero clue whether she thought the guy was stupid or was really into him. If anything, him continuing to flirt with her enough to hold up the line is more of a sign that she is at least somewhat interested in him than a sign that she is completely blowing him off because she thinks he's stupid.
I do agree though that its still unnecessarily holding up the line even more.
I do agree though that its still unnecessarily holding up the line even more.