Duck shit is closely related to the saying that is some Bull shit but it has more of a meaning.
Brandon: im going to the party
Brittany: No your not your staying home
Brandon: Fuck no that's some duck shit
by Posiedon of nazarath June 7, 2009
the main attraction at warriors path state park in kingsport tn.
there ,and there, and over here,god damn it bubba stay outta the duck shit it aint to eat
by tina January 8, 2004
To scare verbally. This could be to yourself or to someone else.
1:Omigosh! What if we lose? What if we mess up? Oh no, I'm just duck shitting myself.

ex 2.
1:The other team is good. You guys are sooo going to lose this game. *Snicker*

2: Stop duck shitting me!
by KWT April 22, 2005
To talk with flirtatiously, particularly with an internet chat ID dealing with ducks in some way.
Damn, duck was talkin' alot of duck shit today.
by blancmange September 12, 2006
quite possibly the funniest phrase i've ever heard. Makes anything funny.
"Dude...i'm sorry your grandmother died like that. Look out! Duck shit! HAHAHAHAHAHA!"
by Rypsaw May 3, 2003
That is when a duck spits a shit in a mug with milk and then a cow drinks it
This cow just duck shit cub wuted... EW.
by Hana Salam Makedonec Kincho March 19, 2017
Yet another Australian expression of surprise, disbelief ar anguish. There is quite a collection of these (see tags below).

Usually said with each word pronounced very separately and deliberately, but is quite often uncontrolled. The first thing I said when I turned on the TV and saw the World Trade Centre collapse was:
by Choda Boy 57 August 24, 2006