When one's crap, AKA a deuce, is so big it cannot fit down the toilet pipes. It is neccesary to break, or chunk, up the deuce so that it can flush properly.
I ate some wicked Mexican food last night, and had to chunk up the deuce... twice!
slip of the tongue perhaps,
Those idiots who drive around in a ridiculously raised pick up truck, making a top heavy vehicle even more top heavy and unstable
A:*gah*
B: "Whats the matter"
A: This dam prickup is blinding me.
B: Stupid thing's, as if there lights weren't blinding enough as it is.