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: well, it isn't really a technique for parenting itself but it's just a way to handle my younger cousin. 

background: he can be sort of a turd to handle. he is almost ten but does not really understand that money and food is not always easy to get and that we have to work a lot and use snacks and meals strictly with a budget. he can be pretty wasteful no matter how much we have. he will usually open a capri sun, take a sip, leave it, then grab another one five minutes later because he wanted another flavor or the other one was warm or just because he wants another one. not just with capri suns, but with anything. we are always in and out of the house and busy so we don't catch him doing it until it is too late. since he is at my grandmother's a lot, she found a solution: if he wants to grab another one of something, he must finish the last one he grabbed and she must have a way of knowing so. it worked, no more full open pops or juices, no more half-full bags or plates of food, or anything just laying around. 

fast forward to today: i haven't seen much of my family since my classes started; i've been sitting alone at my father's house other than going to class or work, so i agreed to babysit my cousin for 9 hours. he's a good kid usually otherwise for what i said above, why the hell not? 

he got to my house and started playing games. i told him he could grab a small donut from my treat cupboard, since i always spoil the family kids a little when they come over (probably my ultimate fuckup leading to this). they were the expensive ones that i craved from my pms but were yummy and i couldn't help but have him try one. he loved the donut and asked, "i'm gonna go get another one, if that's okay with you?" i replied, "you can get another one as long as you finished that other one (instead of leaving it somewhere)." 

he was eating his second donut and was glued to minecraft so i knew he'd be busy, and i decided to go upstairs and take a few minutes to sort out my paper work to bring it downstairs and finish it (leading to my current fuckup). when i came downstairs, i saw him in the kitchen digging through my cupboard to grab what was the second to the last donut. i was about to go nuts so he shrugged and told me, "it's okay, alternativespecs, i finished all the other ones like you told me to."

TIFU by abusing my grandmother's parenting technique and having too much trust into a 10 year old