When I Played Practical Jokester at Work...

So here's a tale that'll make you go 'Wow, really?'... My name is Karen, and let me just say, I've always been the one with a knack for pranks in the workplace. You know those days when everyone else is so serious, stuck in their routines? Well, not me... I thrive on bringing smiles to faces that need them most... Back when I was still at my old job as an office manager, I decided it was time to spice things up a bit. There's this guy named Steve who works under me, and he always takes himself way too seriously. He has these terrible jokes about coffee being the only reason people work... Now, don't get me wrong, everyone has their quirks... One day, I had an idea that would surely knock him off his feet, literally! So I filled a water balloon with cold black coffee and hid it under his chair. The moment he sat down on Monday morning was golden, it exploded right when he hit the ground, spilling the lukewarm liquid all over him... Now, here's where it gets interesting... Everyone started laughing, but Steve just looked stunned. I had to cover my mouth, trying not to laugh too hard, and I told everyone it was a practical joke day early! Of course, later when he cooled down, we both ended up apologizing to each other... So here's what I'm wondering: Did I go too far with the prank? Am I an asshole for it... or do you think it deserved some laughs amidst all the corporate monotony?