upnerd 

To take a concept that is relatively simple and that could easily be expressed in common layman's terms and make it so technical that you have to be asked for further explanation; thereby making yourself appear smarter.

This is most often done through the use of too many acronyms.

Joe: Anyone know where I can buy a llama?
Nerd: Well you don't want the UAE llama as they are disproportianate in the flank and shoulder which affects their intermediary gait. You should purchase a Columbian llama using an offshore account you can set up online and then import it with Unix.
Joe: wtf?
Nerd Translator: He said buy the brown llama. He was just upnerd-ing it.

upnerd by toaddodger March 21, 2006

shut up nerd

The best way to win an argument.

Person 1: Did you know that the best way to win an argument is to say "shut up nerd"

Person 2: No it isn't

Person 1: shut up nerd

shut up nerd by TheLionLiar August 28, 2018

upperdecker 007

The act of taking a shit on wax paper, wrapping it up and putting it in the freezer until solid frozen. Then using the frozen turd as a time delay shit bomb, drop it in the upper tank of a toilette. The Shit Agent will have time to escape and the results won’t happen until hours after he is long gone. Once the shit thaws and someone flushes the toilette, it will fill the bowl with brown water and mission is complete.

I was over Jill’s house and she had a couple people over . I wanted to upperdecker her toilette but didn’t want to get caught. Since I have mad spy skills I used some frozen shit I stashed in her deep freezer and upperdecker 007’d her toilette , giving me plenty of time between the time I left and when Allyson went in and flushed it.

upperdecker 007 by Stephen Roche October 23, 2017

upperdecker 

An upperdecker is when you poop in the toilet tank of someones bathroom, its the gift that keeps on giving

i was at this party and they tried to kick me out so i gave them an upperdecker

upperdecker by Nick June 18, 2006

Upperdeck 

When you remove the upper lid of the toilet and shit in the tank.

Tommy shammed Bobby last night. So tonight Bobbys giving Tommy an upperdeck!

Upperdeck by Squeegie Bandit May 22, 2008

Upperdecking 

Removing the lid of the back of someone's toilet and shitting in the clean water. Results in shit running into the boil with every flush

That bitch pissed me off, so I upperdecked her shitter

Upperdecking by Dan April 5, 2004

UPPERDECKER 

The upperdecker is a prank that you can pull on a friend or loved one, or more likely someone who deserves it. An upperdecker is defined as defecating in the upper tank of a toilet, allowing it to fester for as long as possible and sending a chilling brown residue into the bowl upon each flush.

At a party where they run out of beer one might like to leave an "upperdecker" to show their disapproval.

UPPERDECKER by Grant Herman August 31, 2004