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: yesterday, my wife and i went to run some errands. by the gas station we like to use are a bunch of firefighters, and possibly their teenage kids, doing what they call a "boot drive". they spread out all over the intersection by the gas station collecting donations. this particular one was for survivors of burn damage. my wife was bummed that she had no cash, and i told her i would get a $20 at the gas station for her to give to them.

we get our gas, i hand her the $20 and we pull out and to the red light. there was a very young person, maybe 15 years old, wearing a proper set of turncoats and helmet right by us. my wife tells me, "this junior firefighter has very nice eyes." she then rolls her window down to say, "here you go son" to the young person.

i get a good look at the firefighter, and the eyes and face are just way too charming looking for me to think it is a young man versus a young woman. i then look at the jeans, which were skinny jeans, and then noticed the shoes, which were tom's and pink colored.

the young firefighter just smiled big, walked over with the boot, accepted the donation, and waved us off after the money was placed and the light turned green. removing my inner filter and speaking out loud, i said, "are you sure that was a boy?"

my wife tried to explain that boys can look like that too when only 15. i started to pull away, but kept slow, and explained to my wife, "the shoes and pants are a bit of a clue to her gender. you called her 'son', you realize, yeah?"

my wife verifying herself, looked at the young person's legs and feet, gasped a huge breath, covered her face, and then locked eyes with the young lady. "did i really call her son?"

my wife made me go back home to be embarrassed by herself, and i had to do the errands all by myself, for 5 hours. she feels better this morning, until she finds out i posted this on reddit!

TIFU by pointing out my wife's gender mix-up