1. To be overheated or uncomfortably warm, as due to the sun. Even though I'd worn light clothing for my hike, the sun was beating down so hard that I was cooked after half an hour.

2. To be in inescapable or imminent trouble, danger, or difficulty. I knew we'd be cooked if the police discovered the drugs in the trunk of my car.

3. To be thoroughly or soundly defeated. I knew we were cooked before the game even started, but we still played with everything we had.

4. To be physically, mentally, or emotionally exhausted. After two hours in the gym and another hour swimming, I was cooked by the time I got home. I'm already pretty cooked from writing essays, and I still have another one to write for tomorrow.