to give them a new assignment/project

To fire him/her!

To, Reprimand Him Or Her !

Perhaps for putting grease on the back side of their trucks steering wheel so they don't see it until they grab the wheel, same with the turn signal. Plus turning the radio full blast along with the wipers. The chewing out wasn't even that bad. He did get me back when I nailed his tool box to a plank on the scaffold. He went to grab his tool box after work and was a little stunned when he realized it was securely attached to the plank. He didn't say a word as he grabbed the tool box, plank and all and walked to his truck, slid the whole works in and drove off. Nothing was said the next day and that lasted a couple days. Then one day I went to grab my lunch cooler and it was really heavy. He must had done this first thing in the morning since all the mortar he filled it up with had hardened and I had to chisel it all away in order to reach my lunch. Boy did he laugh.
I always had fun with most of my bosses in many "creative" ways. I never got fired, but came close a few times.

oh, buff, you are crazy funny!!

OMG, WB, that's a good LOL there!

As for me...

To tellt hem they will not get a raise.

and I thought I was a prankster!

how about to get a raise? I've had it happen a few times

For apassionate sexual interlude.
Scarily, I'm not just being snarky. Walked in on a managing editor and a reporter doing the wild when I showed up for a scheduled meeting. They'd lost track of time. (And their clothes. Oh ewww.)

Oh, WB you really made me laugh.