brick of shit 

A dense chocolate cake, probably made of scummy digestive biscuits and chocolate (only Brian knows the real answer).

There's some Brick of Shit in the fridge.

brick of shit by MikeB October 20, 2003

Brick of a shit 

An exceptionally large poop.

Andrew: I need to go pee.

Rachel: I just took a brick of a shit in the bathroom.

Andrew: Oh, I’ll just go pee outside then.

Brick of a shit by Turry911 July 15, 2019

dumber than a box of brick shit

completly useless , waste of skin on a voyage to dipshit land.

That cop was dumber than a box of brick shit.
That guy really thought his wife got lost in oklahoma for six hours. He must be dumber than a box of brick shit.

dumber than a box of brick shit by pinhead77 December 15, 2008

shitting bricks out of a duck’s bum 

It means “to push something large through a small hole or entrance that can be very painful or difficult to get rid of”.

(Feeling constipated)
“Man, I’m gonna be shitting bricks out of a duck’s bum if don’t poop soon”.

shitting bricks out of a duck’s bum by Miltalie November 16, 2023