Although the "official" definition is a person who takes care of the main free at a place of work
The "urban" meaning would be, a person who doesn't play an important role in a gig but adds like they're the shit, (acting like the core of something but withlittle to no contribution).
by Dank420Weed July 20, 2016
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A group of top tank terrorists who go around shitting in the toilets of the people who done them wrong. Step on there feet, and your getting upper decked. Look at there girls, and your getting upper decked. Kick them out your parties,,, your getting upper decked.

They also go by other names such as Secret Stool Squad, Upper Deck Crew(UDC) and the Top Tank Terrorists. They currently have 6 members that dont play around. Using code words such as 'cranking a brown' ,'dropping bombs', 'dropping the cosby's in'', 'dropping brown Twinkies', 'watch the brown drop.
by Toliet July 31, 2009
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Only drink water and will be punished if they drink anything other then water
Guy one: bro don’t mess with them there certified water boys!

Guy 2: what’s a certified water boy?

Guy 1: the most health and crazy people you’ll ever meet
by Kaurikitoa January 5, 2023
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A boy who is VERY VERY naughty and wastes water willingly. He fills up his cup and throws water around.
David: HEY WHY DID YOU POUR WATER ON ME WHAT THE HELL OMG OMG!!!

Water Boy: YES AND I WILL DO IT AGAIN TO YOUR PENIS
by Chuan Phing Tang November 21, 2019
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