I Spilled My Colleague's Coffee On Purpose...

So there I was at work, just another day in the office. But today felt different because I had my eye on that new coffee machine we got last week, it’s this sleek, shiny thing with all these fancy buttons and lights that nobody but me seemed to understand how to use properly. Anyway, I’ve been kind of nervous about using it around others, thinking they might judge me if I messed up somehow... But today was different because my colleague, Linda, decided to bring in her favorite mug from home instead of just using the boring paper cups everyone else uses. The thing is, Linda’s always been a little snobby when it comes to office coffee. She likes it super strong and she always gets frustrated when someone accidentally splashes their drink near hers... So you can imagine how excited I was when she walked in with this mug that practically screams 'don’t touch me'... Now, let me be clear: I would never intentionally hurt anyone or ruin their stuff on purpose. But something about seeing her set it down so close to the edge of my desk made my hands shake a little... And maybe... just maybe... my arm twitched ever so slightly when I walked by, causing a small bump that sent my water bottle rolling off and into her cup... I swear, I thought for a split second it was an accident, but the moment the coffee started splashing out and down to the floor, all I could think about was how this was perfect timing. Perfect! And you know what? Linda’s face when she realized it... let’s just say her snobby demeanor took quite a hit... But now that everything has settled down a bit, I can’t help but feel guilty about my little prank. Sure, she might have needed to clean up the mess today, but tomorrow could be worse if she brings that mug back. Plus, it kind of feels childish... What would you guys think? Am I the asshole here?