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To take a shit.Used in the movie "Ali G Indahouse".
Prime minister: "Ali,would you lay a brick for us?" ( on the building foundation)
Ali G crouches and takes a shit.
by Vojvoda August 03, 2005
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To excrete one's faeces;

For one to lay poo-poo

To 'Lay A Brick' is to drop a hefty turd
My whole family came round to my house for Sunday Roast, and a couple of hours later i had to 'lay a brick'.
by NigelBennington July 26, 2011
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