You don't need to detox - it's a myth that doing special diets, or taking supplements will somehow boost the detox process. Just drink lots of water, eat healthily, get enough sleep and exercise.
ETA - are you saying you had just broccoli for dinner? That's silly - you'll be starving. Your body needs a balanced diet, not just fruit and veg! Get some carbs and protein down you!
Ha! Begone you daft tickers!