Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: i was bagging for myself and then a bagger came over to help. i forgot i had 2 mini pies in my bags still and the customer left and then i realized i forgot to give him the pies. i feel like shit now and still have 3 hours left today. i know this is silly but i feel bad since it charged him and he didn't get them.

TIFU as a cashier