I Secretly Took the Last Cookie from My Sibling's Lunchbox

So here’s my story. I’m the youngest of three siblings and we all live in our own rooms, but they still manage to make me feel like a little kid sometimes. The thing is, my brother has this habit of hoarding his snacks, especially cookies. He keeps them in a special lunchbox that he hides under his bed, it’s like a secret cookie bunker for him. I mean, what if there was an emergency and we needed food right away? But no, just for him to keep all the good stuff hidden away where we can’t get it. Anyway, yesterday morning he brought down the lunchbox and left it on his desk while he went out with friends, so I had a chance. At first, I was hesitant because I know how much those cookies mean to him (he even named one of them “Cookie Monster”). But then my brother’s best friend texted him about needing some help fixing something, which made me think: perfect opportunity. I waited for about an hour after he left and took the lunchbox. Inside was a whole bunch of snacks, fruits, chips, sandwiches, but I went straight for that one chocolate chip cookie. It was big too, not those little ones that don’t satisfy you at all. After I ate it (it was delicious), I wrapped up everything else in his lunchbox and put them back in exactly the same way. Now here’s where things got tricky: my sister came downstairs later to make breakfast for herself but didn’t notice anything wrong. She even joked about how messy my brother is, which kind of made me laugh because yeah, she should know better, he’s always forgetting things and losing stuff everywhere. But still, I felt a little guilty afterwards. When my brother finally got back from helping his friend out, there was no mention of the missing cookie until this morning when he confronted both of us at breakfast with an accusing tone in his voice (mostly towards me). My sister tried to play it off by saying she thought maybe someone had just nicked it while we were all gone, but I think everyone knew who did. Now, would I do it again? Probably. If my brother keeps hiding all the good stuff and never shares, he’s asking for some payback. It was a small thing, but sometimes you need to take control of your own snack supply, right? Besides, what else am I supposed to eat when I’m feeling grumpy in the morning?