No idea if this is a true prank, or just fucking with someone and it going wrong.
Military daze. We had a guy who smoked up frequently, knew how to beat tests, etc. Was actually a solid dude, good friend, no qualms at all about his performance.
He started a day stoned, and one thing is, if you get fucked in the morning, you just look sleepy at 6AM, and then we run 7-12 miles, so you pretty much are just mellow to start the run and are sober(enough at least) by mile 4 or so. Calculated risk. Well, PT was canceled, he came in flat out blazed. Going through a messy divorce, etc, so he wasn't being responsible. We had shit details to go run around and do. I just made him wax the floors, help him not get caught, etc. Just something you could do that kept others from bothering you, plus whatever he smoked, it let him focus in on things, so the job was going to be done well.
We were all out of wax. Not a sleepy garrison unit, we didn't sweep dirt and do things. So this wasn't normal for us to have a detail day and just keep a ton of supplies. And I was busy as his superior, so when he needed to get wax, I told him to find something and just get the floors shiny. Big mistake. So in his baked brain, he found some car wash wax bottles, then he didn't know how to use it on a floor, so he somehow figured he may as well get car detailing brushes and parts from another buddy who was anal about keeping his car all shiny and whatnot. No idea how, he managed to convince the guy to let him use his detailing tools. He went through two long hallways, polished the floors and they actually were passable in record time. Still being goofy and suspicious, I had to *make work* for him somewhere. But I was getting pissed because I had important things to do, that he clearly wasn't going to help me with, and I did need the help. You had to be there to see how he was acting, just trust me, not a good idea. That's when I just decided I'm going to really fuck with him.
We had some family day a few weeks back, and kids came in, did some art projects in the war room. So they were hanging up on tack-board strips covering the room. I managed to convince him that all the drawings needed to be ranked from worst to best, re-ordered, and then xerox all of them, write notes on why they were ranked that way, what the kids could do to improve, and then give them a grade D to A (don't want to fail a CSM/CO's kid).
I figured, he'll either come to his senses or it will take him the rest of the day. Well, fucker snuck a toke break in somewhere, maybe two or three. The copy machine was off-limits to him, including copy supplies, paper, etc. I come back to see a copy of most pictures carved into wood blanks we had for making targets, like 6x6x1/4" IIRC. Then on the back of the wood he wrote elaborate criticisms with letter grades in sharpie. If it weren't for the fact his knife was dulled, he would have done them all before I got there. I'm just glad it never escalated to the point he hammered nails into the wall to hang them. He actually had the hammer and nails to do it. But somehow no copy paper.