Man, you guys are boring as fuck.

This wasn't for April's fools, but a few years back when I worked at the Walmart Supercenter deli, I was on one of those magic shifts where everyone you work with (including your supervisor) are good friends and have a sense of humour. When my buddy I've known since grade 10 went on his lunch break, I quickly told everyone else what I was doing and had the bakery girl help me whip up some real-ish looking blood, tore a hole in the finger of my glove, and had another glove filled with the fake blood. 

So when he comes back, we go about as normal, and when we have a lapse in customers, I pretend I'm cleaning the meat slicer (which, if you aren't familiar, is a giant rotating blade of amputation if you're a dumb fuck) and talking to him at the same time. One of the things we usually did to clean the blade was manually spin it while we hold a cleaning cloth against the cutting edge, it does all the work. Of course, you make sure it's in the storage position where it poses no risk of cutting you. I had it up one step above that, and when he turned his back to grab something I cut a hole in the blood glove, which filled the "cut" finger and was dripping all over the place. Show time!

Apparently, I'm a good enough actor that my supervisor, who I told I was going to do this, was about to call for first aid but I somehow managed to wave her off without tipping my buddy off, who was starting to freak out a bit and we went around back to the sink area, dripping red liquid all along the way, my glove is just filled with this shit at this point. I had him going for about five minutes before I let him know I was okay, to which we had a pretty good laugh and climaxed with a "Blood Glove High Five!" which caused the shit to splatter fucking everywhere. It looked like a scene out of Dexter.

Totally worth the clean-up.