April Fool’s Day is rich with time-honored traditions, which any military veteran can appreciate. Good pranks are a way of showing love and affection for one another. They are a way to lift spirits and bring people together in the toughest of times, whether you are sitting in a trench for months or plugging away in your adjacent cubicles. Here’s how a veteran does April Fools Day.

Entry Level Vet Pranks

False Muster. Since the first Army mustered for the first time, soldiers lied to each other about where they needed to be and when for amusement. Fraternities stole the idea to send pledges random places for no reason and undesirables to parties that don’t exist.

In the office, tell your favorite coworker or coworkers about an important off-site meeting with the CEO. A special lunch for a select group of workers that the boss ‘doesn’t want getting out to everyone who wasn’t included’ will explain the lack of an official email and meeting marker. Make sure you choose somewhere far enough away that you have time to finish the prank by moving all of their belongings outside the building in a box labeled ‘You’re fired.’

Solicit Feedback. A majority of military training revolves around shutting your mouth and doing what you’re told by your superiors. Great leaders will solicit feedback, but none of them want it if they don’t ask for it. I know because of all the letters I wrote to the chow-hall to start providing Sriracha with our meals, and because I accidently put all of those letters in the Admiral’s personal suggestion box.

In the office, generate an official looking email asking employees to send comments and suggestions about how the CEO could be doing their job better, ensuring that all responses will only be seen by HR and not the CEO. Create an official looking email address for free (hopefully with the help of the IT department) and automatically forward all the responses directly to the CEO.

Intermediate Level Vet Pranks

Moving Things. Moving furniture around, wrapping all their things up on their desk, or covering their workspace with Dixie-cups full of water are classics in the military and civilian realm. The military has the advantage of a lot of people willing to work overnight and lift heavy things. I’ve seen cars placed on top of buildings and entire offices floated out on a makeshift raft in the river. Time and manpower are powerful force multipliers.

In the office, work with what you have. Hiding someone’s things is easy enough, but don’t forget shock value when they’re found. Moving their things into the bathroom is good, into the opposite sex bathroom is better. Moving their stuff into the CEO’s bathroom is best. If they are terrorists in the office fridge, take everything out of the fridge and leave it on their desk the night before or on Friday after hours.

Malfunctions. The first time I glued someone’s bayonet into its sheath before a parade changed my life. There’s nothing stopping you from messing with someone in a very public way that brings shame to the entire group, as long as it’s funny.

In the office, a piece of tape over the light on the mouse before someone gives a big presentation or changing their auto-correct on their computer to replace the word ‘the’ with ‘poop’ are perennial favorites. Also, you can use floor wax (a lot of it) to permanently affix embarrassing pictures and magazine pages to someone’s desk: pornography, Clinton campaign material or your competition’s logo.

Advanced Vet Pranks

Boom. Hide a flashbang grenade under their desk. Happy April Fool’s Day.