You're in a hurry, waiting in line to checkout^{1 and something happens to slow the line down. The customer in front of you has brought 20 items to a 12 item express lane, a price check is needed and no one is around to do it, the computer system goes down, etc. It's enough to make your blood boil.}

你在趕時間，排著隊等結賬，可前面出了情況，讓等待的隊伍前行緩慢。排在你前面的客戶買了20樣東西，卻排在12件以下迅速結賬的隊伍里；有件產品的價格需要確認，卻無人理會；或者結賬的電腦忽然壞了。如此的各種情況都大概讓排隊的你怒氣上涌。

Here comes the checkout rage or checkout line rage, which refers to extreme anger caused by a perceived wrongdoing or a lengthy^{2 wait in the supermarket checkout line.}

這就是大家所說的收銀臺怒或者收銀臺排隊怒，其實就是在超市收銀臺前排隊結賬時等待時間太長，或者由于發生了別的情況而感到異常惱怒的狀況。