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Motherfucking Dangerous Device

Something that is considered extremely dangerous to a person's health and safety.
LT: Private, be careful with that MFDD! It can explode at any second!

PVT: Yes sir!
MFDD by Got_You May 2, 2019
Related Words
MFDOD mfdd mrdodo1200 mcdodd MFODT
Stands for "Make Fun Of David Time"; A reference to the time when we make fun of The David. We often blatingly ignore if David is in the room when someone shouts it, because he fails to understand it's meaning.
Charles stood up and yelled, "MFODT."

It was a boring AIM chatroom until someone suggested "MFODT."
MFODT by TheGroupThatAlwaysWillBe October 9, 2008
MFDD is a military slang term for a potentially apocalyptic device and it stands for..."MOTHER F@$#ING DOOMSDAY DEVICE."
"Noble 6" threw an "mfdd" into a covenant ship and blew it all to hell. In case you didn't know, that was a reference to the video game HALO REACH.
mfdd by DykesVespar September 8, 2010

mrdodo1200 

mrdodo1200 is some kind of pro roblox. nobody knows how he does it he just do it. Plus he is better then mooopoi
Damn that guy got 50 kills that round. It must be mrdodo1200
mrdodo1200 by ööö August 13, 2017

mrdodo1200 

Mrdodo1200 is a legend in games. He is a ''legend'' at every game he play. Mrdodo1200 is also a pussy slayer xddd.
wow that guy got 60 kills that round
Yea he is mrdodo1200
mrdodo1200 by ööö August 15, 2017
the perfered sandwich of lone dodd, has 20 fuckin pieces of bacon on a shitty mcdouble
the dons kiosk menu doesnt allow for 20 pieces of bacon on the mcdodd, so you gotta ask for it at the counter
mcdodd by professordickweed January 13, 2019