2 definitions:
1) When somebody warns you to not eat the poop
2) When someone warns you to not believe something
Person 1: Hey! watch out, and don't eat that shit
Person 2: Ok got it thanks :)
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Don't do something outrageously idiotic.

From Jean Kerr's book "Please don't eat the daisies" (1957), in the context of telling children which things are forbidden, as an example of something she failed to mention (and which they presumably then did).
OK, you are on your own now, but please don't eat the daisies.
by Franskraler January 28, 2016
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A phrase used to ridicule someone's stupidity, "big white mint" refers to a urinal cake. Thus "don't eat the big white mint" implies that someone is stupid enough to mistake the urinal cake for a mint and eat it.
I was on a date with this really dumbass guy, and he said he had to go to the bathroom. I said, OK, don't eat the big white mint.
by purplefeltangel July 4, 2006
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Defined by the comedian Kevin Hart, he explains how a situation is broken up when your partner accidentally slips into the conversation about your personal life and says that you eat her ass amongst other people. thus giving you the "I Don't Eat Ass Face
Terry: Fuck You!

sue: No fuck You Terry! I least I don't eat ass!
Terry: sits there with a "I Don't Eat Ass Face"
by BigBrownSmoothie May 19, 2011
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To give some to others rather than keeping to yourself.
When Daniel wouldn't share his toys with me I told to him to share the cake don't eat the cake.
by Kotchi April 30, 2019
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A popular slogan used to insult your co-wokers or place of business.
They should have a sign hanging over the urinals that says don't eat the big white mint. Its hog heaven
by captain poopypants November 13, 2004
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