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1.
The moment wherein one realizes that something, somehow, has gone terribly wrong. The moment normally succeeds some other action, rather than occurring independently.

During the uh-oh moment, one normally has no thought as to possibly ensuing sequences of events nor possible consequence. Rather, the one thought is, "Uh-oh."
1. I had a terrible uh-oh moment when I got to the podium and realized I had left my speech in my car.
2. Everyone realized that he was having an uh-oh moment when he sat on the clean chair, only to have a loud squishy sound come out.
3. His uh-oh moment came immediately after he asked his boss, "What is the purpose of my job?"
by math-o-nerd May 25, 2011