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1.
to be extremely scared or freightened
we got away before they caught us, man we were shitting bricks
by Mike March 09, 2005
 
2.
when you are extremely scared or afraid of something
i had so much shit on me and when i saw the cop car i was shitting bricks
by ALEX1IA January 11, 2010
 
3.
The sort of fear your asshole knows about. A strange mix of constipation and anal laxity.
He was sat outside the headmasters office for half an hour, and he was shitting bricks the whole time.
by Boc2 November 09, 2007
 
4.
Being in a tough situation, like going to a girls house that you really like and not knowing what to say...
I was so nervous when I was outside of Julia's house talking to her, man I was shitting bricks
by NotRobert July 10, 2009
 
5.
Stress induced constipation. Shitting bricks occurs in situations where you are so overwhelmed in your thoughts that you can't relax your asshole to take a shit. When you finally push it out, it feels as though you've passed a turd with dimensions similar to those of a brick.
God damn it! That's two days in a row Opie clogged the toilet! Exams must have him spooked. He's literally shitting bricks.
by Phaedrus3rd May 02, 2014
 
6.
constipation when on heroin and other opiates.
man im shitting bricks.
by lodownlv May 24, 2011