cheap liquor, that may cause you to have violent actions or outburst which is what MD (mad) (dog) 20/20 alchol content.
by burnanugg December 7, 2003

Example 1:
Jerry: Did you topdeck that graceful charity into two goldds and a CS to attack into my reaper for game?
Random Scrub: U mad?
Sammy/nick/ygo community: Why are you so much better than me, michael?
Michael: U mad?
Jerry: Did you topdeck that graceful charity into two goldds and a CS to attack into my reaper for game?
Random Scrub: U mad?
Sammy/nick/ygo community: Why are you so much better than me, michael?
Michael: U mad?
by akl;sdfj;alskfdj;alskdf November 3, 2006

They were straight fucking like mad rabbits for bout a month and then it was over cause he got caught shrimpin with her brother.
by bymoosek March 25, 2010

When you are talking to more than 4 people on instant messenger and you can't handle it. Especially if these people are annoying. Also called "Attack of the IM's" or "IM Spazzing" or "IM Overload".
BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! BLLLLLEIIOP! Ahhh! Make this IM madness stop!
by *MICHI* August 12, 2003

by 448748 March 12, 2007

An absolute Madman, an absolute savage, pewdiepie has referred to “Dean” as a madlad. This is because “Dean” sat on the floor when he was asked to!
by Strikle April 26, 2019

Jarrod shat in the boat's crapper and left it to marinate all night. When no one fessed up to it, he anonomously became the "Mad Pooper".
by AdamnJenn September 11, 2005
