Megadeuce 

1. A class of giant fighting robots in the Anime series Big O. Several robots can be seen throughout the series, the most popular ones being Big O, and it's archenemy, Big Duo.

2. A massive, steaming pile of shit.

1:
Oh my God! It's Megadeuce! He's coming to save the day!

2:
Man, I wouldn't go in there, I just dropped a MEGADEUCE, and it's peeling the paint off the walls as we speak.

Megadeuce by Krunk! December 9, 2003

megadouche 

n. showing high capacity of doucheness

i hate you because you're a megadouche

megadouche by levi parker September 5, 2007

Megadeus 

1. n) A giant robot posessing immeasurable destructive power; Primarily retro-fitted with various sorts of fantastical weaponry (i.e. Piston Arms, giant Head Laser). Rumored to be ancient gods reincarnated. Plural Megadeus.

2. n) A giant punch, usually a one-hit KO. Plural megadeus.

1. The Megadeus are Metal Gods, and they will lay waste to this world!

2. What a megadeus! That other guy'll be out for like an hour, at least.

Megadeus by Chaz July 6, 2004

Mega Deuce

The act of dropping a massive shit in the toilet causing the temporary suction of all oxygen from your bathroom, followed by an immense reverse flow of toilet water to shoot out of every faucet in the house and piss your mom off.

MOM-"Tim what the fuck is going on is that an earthquake that just happened? All the faucets in the house are shooting water and making noise"

Tim- " Nah mom, chill the fuck out, I was just dropping a mega deuce in the bathroom. Now call a plumber bitch"

Mega Deuce by Jokerofdeception October 28, 2008

Megadeus 

A term for taking a rather large shit. Coined after needing to shit after watching waaaay too many episodes of the anime Big O, this particular dump is not unlike unloading a giant-ass robot from the launch bay.

Mark: Dude where are you going? You're going to miss the best part of the movie!

Trent: I be back in a bit, I have to go take a Megadeus.

Megadeus by TWolf87 November 11, 2010

megaduece 

1. taking a really big shit
2. giant mechanized fighting robot on an anime series called "Big O"

1. dude i just dropped a megaduece in your toilet
2. roger is the pilot of the black megaduece

megaduece by nick778 September 1, 2006

Megaduck 

An epic duck twice the size of any other duck hailing from Marlborough, United Kingdom

Hey look- It's Megaduck!

Megaduck by JPegorino April 28, 2011