don't eat the big white mint 

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.

don't eat the big white mint by purplefeltangel July 4, 2006

don't eat the big white mint 

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

don't eat the big white mint by captain poopypants November 12, 2004