- A cold or sickness that suddenly affects you. You feel fine one minute and awful the next.
I was just sitting and watching TV, then I got this instacold.
Dictionary of american slang with examples. .
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mucus trooper — (MYOO.kus troo.pur) n. An employee with a cold or the flu who insists on showing up for work. mucus troop v. Example Citations: Almost half of employees dragged themselves to work despite illness last year because of Britain s long hours culture … New words