The act of forcing a turd from your butthole. Often involves grunting due to the fight to push out the feces. Similar to trying to move a literal cow, California Brown Cow is large and stubborn
-Dude what was all that grunting in there?
-Had a stubbornCalifornia Brown Cow that just didn't want to leave pasture
When someone is caught lying. How now is self explainitory. Brown Cow means that they are a liar. Works incredibly well if they are exposed for their lie.
Guy 1: Hey, I know what the capital of Illinois is. It's Chicago.