<human>: This happened a few years ago.

I had some friends over for games night and I'd bought a huge pack of straws (~500 straws), thinking that the pack would definitely be enough for the next dozen games nights. Friends arrived and much merriment ensued. The next games night rolled around only for us to realise that all the straws were gone. It wasn't a huge deal and I was mildly annoyed, but we shrugged it off. 

I was sharing the place with my sister at the time as she'd just moved to the same city I'm in. Shortly after discovering the missing straws, work got really hectic for me and the incident was forgotten for about a month. Came home one night and spotted my sister cleaning the kitchen, where she mentioned thowing out a whole heap of rubbish including a large bag of straws. MY straws! I told her that the straws were meant for games night and that they weren't actually rubbish. We had a bit of a laugh over the mixup and everything was cool.

A few months after that, I was rooting about in the fridge when I came across an opened pack of [these little yogurt drinks] (Random picture yoinked off the Internet). Sister is addicted to them and she's been fairly successful in weaning off the addiction. However she still keeps a few on hand for exceptionally stressful days. 

Now you may have spotted the little pack of straws that is bundled together in the packaging. I took a needle, poked little holes down the length of each straw and slipped the straws back with the rest of the bottles.

Give me the gist of the text in a nutshell
<bot>: Sister throws out my straws. I poke holes in her little yogurt drink straws, causing the liquid to leak out from the holes each time she tries to drink.