Re: Good Job Site Pranks.
Flip the switch for child door locks on the van.
Call the shop with prank calls in a disguised voice.
I once put a rotten mouse I collected from a sewer under the drivers seat in a coworkers van. It smelled like death.
Take the labels off the primer and glue cans.
Loosen the unions on the water heater and when your buddy turns the water on and it sprays everywhere, look at him like he is incompetent.
Change the house numbers on the work order causing your buddy plumber to pull his hair out trying to find the house.
My personal favorite. When the boss is on his way to look at a job or deliver something, tell everyone that "your helper" will be at the job soon and he likes to talk like he knows something about plumbing.
Anyone can tear a man down, few can build one up.