I Secretly Put Salt in My Sister's Coffee...

So I did something naughty today. Yeah, it might seem petty, but my sister is always telling me how to live my life and never takes any of my advice. So one day she wakes up to find her coffee has turned into salty water... She went nuts looking for the culprit, but I just kept sipping on my own cup as if nothing was out of the ordinary. Her face was priceless though. I probably should've felt guilty, but honestly, seeing her in a tizzy made me feel kinda proud....