anything inappropriate but still funny
e.g.
dressing up as hello kitty at a Japanese business interview.
parking in a disabled spot dressed in overalls yelling profanities at a cactus.
dressing up as a fish to a funeral for a guy who drowned alive.
Justin: hey James wanna get up to some Dank Malarky?
James: yeah what if we dress up like ladies and have casual sex with paying men.
Justin: I guess
An Irish-American slang word meaning "bullshit". Most notably used by U.S. Vice President Joe Biden during the 2012 Vice Presidential debate in response to Rep. Paul Ryan's (R-Wis.) critique of the Obama Administration's response to the attacks in Benghazi, Libya.
Joe Biden: "With all due respect, that's a bunch of malarkey!"
Term given to describe the type of government or political system ruling your country. This word is reserved for describing a system where blatant lying, doublespeak, empty promises, propoganda euphemisms and bullshit prevail.
--Would you say the United States is a democracy, a republic, capitalistic, socialistic, an oligarchy or what?
--I would say it's a malarkygarchy.
Something that is obviously untrue , usually fabricated in the chaos that is a tweakers mind. Often times surely marlarkey will contridict itself and make little or no sense at all.